Standard Lemma guide

fluid

adj · noun · 15 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • Received-Pronunciation: /ˈfluːɪd/
  • British, Southern, Standard: /ˈflʉwɪd/
  • US: /ˈflu.ɪd/
  • US: Recorded audio is listed in the source snapshot.
  • Australian, New-Zealand: /ˈflʉːɪd/
  • Northern-Ireland, Scotland: /ˈflʉ.ɪd/
  • Wales: /ˈflɪu̯.ɪd/
  • obsolete: /ˈfljuːɪd/
  • rhymes with -uːɪd
  • CMU ARPABET: F L UW1 AH0 D Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
  • CMU ARPABET 2: F L UW1 IH0 D Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

adj

Meaning 1

Of or relating to fluid.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adj

Meaning 2

In a state of flux; subject to change.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

adj

Meaning 3

Moving smoothly, or giving the impression of a liquid in motion.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

adj

Meaning 4

Convertible into cash.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

adj

Meaning 5

Genderfluid.

Definition source: English Wiktionary via Wiktextract

Usage: rare

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

noun

Meaning 6

Any substance which can flow with relative ease, tends to assume the shape of its container, and obeys Bernoulli's principle; a liquid, gas or plasma.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

noun

Meaning 7

A liquid (as opposed to a solid or gas).

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

8

noun

Meaning 8

Intravenous fluids.

Definition source: English Wiktionary via Wiktextract

Usage: colloquial, countable, specifically, uncountable

Qualifier: typically in the plural

Topics: medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

9

adjective satellite

Meaning 9

subject to change; variable

Definition source: Princeton WordNet 3.0

Examples

  • a fluid situation fraught with uncertainty
  • everything was unstable following the coup

Meaning relationships

Synonyms: unstable

Antonyms: none provided

10

adjective satellite

Meaning 10

affording change (especially in social status)

Definition source: Princeton WordNet 3.0

Examples

  • Britain is not a truly fluid society
  • upwardly mobile

Meaning relationships

Synonyms: mobile

Antonyms: none provided

11

adjective satellite

Meaning 11

in cash or easily convertible to cash

Definition source: Princeton WordNet 3.0

Examples

  • liquid (or fluid) assets

Meaning relationships

Synonyms: liquid

Antonyms: none provided

12

adjective satellite

Meaning 12

smooth and unconstrained in movement

Definition source: Princeton WordNet 3.0

Examples

  • a long, smooth stride
  • the fluid motion of a cat
  • the liquid grace of a ballerina

Meaning relationships

Synonyms: fluent, liquid, smooth

Antonyms: none provided

13

adjective satellite

Meaning 13

characteristic of a fluid; capable of flowing and easily changing shape

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: runny

Antonyms: none provided

14

noun

Meaning 14

continuous amorphous matter that tends to flow and to conform to the outline of its container: a liquid or a gas

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: matter

Narrower terms: gas, liquid

15

noun

Meaning 15

a substance that is fluid at room temperature and pressure

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: substance

Narrower terms: coolant, filtrate, ichor, liquid

History

Etymology

Etymology tree Proto-Indo-European *bhel-der. Proto-Indo-European *bhlewH-der. Proto-Indo-European *bhluH-yé-ti? Latin fluō Proto-Indo-European *dheh1-der. Proto-Italic *-iðos Latin -idus Latin fluidusder. Middle English fluid English fluid From Middle English fluid, from Latin fluidus (“flowing; fluid”), from Latin fluō (“to flow”), from Proto-Indo-European *bhleh1- (“to swell; surge; overflow; run”). Akin to Ancient Greek φλύειν (phlúein, “to swell; overflow”). Not related to English flow, which is a native, inherited word from *plew-, but is distantly related from English bleat.

Across languages

Translations

156 source translations are retained for this English entry.

  • Armenian: հեղուկ (heġuk) — of or relating to fluid
  • Bashkir: шыйыҡ (şıyıq) — of or relating to fluid
  • Bulgarian: течен (tečen) — of or relating to fluid
  • Bulgarian: течлив (tečliv) — of or relating to fluid
  • Czech: tekutý — of or relating to fluid
  • Czech: fluidní — of or relating to fluid
  • Danish: flydende — of or relating to fluid
  • Dutch: vloeibaar — of or relating to fluid
  • Esperanto: likva — of or relating to fluid
  • Finnish: fluidi- — of or relating to fluid
  • French: fluide — of or relating to fluid
  • Georgian: თხევადი (txevadi) — of or relating to fluid
  • German: flüssig — of or relating to fluid
  • Ancient Greek: ὑγρός (hugrós) — of or relating to fluid
  • Hindi: द्रव (drav) — of or relating to fluid
  • Italian: fluido — of or relating to fluid
  • Northern Kurdish: şilemenî — of or relating to fluid
  • Latin: fluidus — of or relating to fluid
  • Latvian: šķidrs — of or relating to fluid
  • Māori: kūtere — of or relating to fluid
  • Norwegian Bokmål: flytende — of or relating to fluid
  • Norwegian Nynorsk: flytande — of or relating to fluid
  • Plautdietsch: flissent — of or relating to fluid
  • Polish: płynny — of or relating to fluid
  • Polish: płynowy — of or relating to fluid
  • Polish: ciekły — of or relating to fluid
  • Polish: cieczowy — of or relating to fluid
  • Portuguese: fluido — of or relating to fluid
  • Punjabi: ਤਰਲ (taral) — of or relating to fluid
  • Romanian: fluid — of or relating to fluid
  • Russian: жи́дкий (žídkij) — of or relating to fluid
  • Spanish: fluido — of or relating to fluid
  • Swedish: flytande — of or relating to fluid
  • Turkish: akışkan — of or relating to fluid
  • Bulgarian: непостоянен (nepostojanen) — in a state of flux; subject to change
  • Bulgarian: променлив (promenliv) — in a state of flux; subject to change
  • Czech: proměnlivý — in a state of flux; subject to change
  • Danish: flydende — in a state of flux; subject to change
  • Danish: omskiftelig — in a state of flux; subject to change
  • Dutch: vloeibaar — in a state of flux; subject to change
  • Dutch: vloeibare — in a state of flux; subject to change
  • Dutch: fluïde — in a state of flux; subject to change
  • Finnish: muuttuvainen — in a state of flux; subject to change
  • Greek: ρευστό σκηνικό (refstó skinikó) — in a state of flux; subject to change
  • Italian: fluido — in a state of flux; subject to change
  • Norwegian Bokmål: flytende — in a state of flux; subject to change
  • Norwegian Nynorsk: flytande — in a state of flux; subject to change
  • Polish: płynny — in a state of flux; subject to change
  • Portuguese: fluido — in a state of flux; subject to change
  • Russian: теку́чий (tekúčij) — in a state of flux; subject to change
  • Russian: ги́бкий (gíbkij) — in a state of flux; subject to change
  • Swedish: flytande — in a state of flux; subject to change
  • Czech: plynulý — moving smoothly
  • Danish: flydende — moving smoothly
  • Dutch: vloeiend — moving smoothly
  • Dutch: vloeiende — moving smoothly
  • Esperanto: flua — moving smoothly
  • Finnish: sulava — moving smoothly
  • German: fließend — moving smoothly
  • Māori: kutere — moving smoothly
  • Norwegian Bokmål: flytende — moving smoothly
  • Norwegian Nynorsk: flytande — moving smoothly
  • Polish: płynny — moving smoothly
  • Portuguese: fluido — moving smoothly
  • Russian: пла́вный (plávnyj) — moving smoothly
  • Scottish Gaelic: siùbhlach — moving smoothly
  • Bulgarian: ликвиден (likviden) — convertible into cash
  • Dutch: incasseerbaar — convertible into cash
  • Dutch: incasseerbare — convertible into cash
  • Finnish: likvidoitava — convertible into cash
  • Finnish: likvidoitavissa oleva — convertible into cash
  • German: flüssig — convertible into cash
  • Indonesian: cair — convertible into cash
  • Italian: liquido — convertible into cash
  • Polish: płynny — convertible into cash
  • Portuguese: líquido — convertible into cash
  • Russian: ликви́дный (likvídnyj) — convertible into cash
  • Arabic: سَائِل (sāʔil) — any state of matter which can flow
  • Arabic: مَائِع (māʔiʕ) — any state of matter which can flow
  • Armenian: հեղուկ (heġuk) — any state of matter which can flow
  • Bulgarian: флуид (fluid) — any state of matter which can flow
  • Catalan: fluid — any state of matter which can flow
  • Chinese Mandarin: 流體 /流体 (liútǐ) — any state of matter which can flow
  • Czech: kapalina — any state of matter which can flow
  • Czech: tekutina — any state of matter which can flow
  • Danish: væske — any state of matter which can flow
  • Dutch: fluïdum — any state of matter which can flow
  • Egyptian: r:Dw-w-Aa2:H_SPACE (rḏw) — any state of matter which can flow
  • Esperanto: likvo — any state of matter which can flow
  • Finnish: fluidi — any state of matter which can flow
  • Finnish: juokseva aine — any state of matter which can flow
  • Finnish: virtaava aine — any state of matter which can flow
  • French: fluide — any state of matter which can flow
  • Georgian: სითხე (sitxe) — any state of matter which can flow
  • German: Fluid — any state of matter which can flow
  • German: Flüssigkeit — any state of matter which can flow
  • Greek: ρευστό (refstó) — any state of matter which can flow
  • Ancient Greek: χύμα (khúma) — any state of matter which can flow
  • Gujarati: પ્રવાહી (pravāhī) — any state of matter which can flow
  • Hebrew: נוזל — any state of matter which can flow
  • Hindi: द्रव (drav) — any state of matter which can flow
  • Hindi: तरल (taral) — any state of matter which can flow
  • Hungarian: folyadék — any state of matter which can flow
  • Icelandic: straumefni — any state of matter which can flow
  • Icelandic: kvikefni — any state of matter which can flow
  • Indonesian: fluida — any state of matter which can flow
  • Interlingua: fluido — any state of matter which can flow
  • Irish: sreabhán — any state of matter which can flow
  • Italian: fluido — any state of matter which can flow
  • Japanese: 流体 (ryūtai) — any state of matter which can flow
  • Japanese: 液体 (ekitai) — any state of matter which can flow
  • Korean: 유체 (yuche) — any state of matter which can flow
  • Korean: 유동체 (yudongche) — any state of matter which can flow
  • Latin: latex — any state of matter which can flow
  • Latin: liquidus — any state of matter which can flow
  • Latin: fūsilis — any state of matter which can flow
  • Latvian: šķidrums — any state of matter which can flow
  • Macedonian: течност (tečnost) — any state of matter which can flow
  • Malay: بندالير (bendalir) — any state of matter which can flow
  • Malayalam: ദ്രാവകം (drāvakaṁ) — any state of matter which can flow
  • Māori: kūtere — any state of matter which can flow
  • Māori: wē — any state of matter which can flow
  • Mohawk: ohné꞉ka — any state of matter which can flow
  • Norwegian Bokmål: væske — any state of matter which can flow
  • Norwegian Bokmål: fluid — any state of matter which can flow
  • Norwegian Nynorsk: væske — any state of matter which can flow
  • Norwegian Nynorsk: fluid — any state of matter which can flow
  • Pannonian Rusyn: чечносц (čečnosc) — any state of matter which can flow
  • Polish: płyn — any state of matter which can flow
  • Polish: ciecz — any state of matter which can flow
  • Portuguese: fluido — any state of matter which can flow
  • Romanian: fluid — any state of matter which can flow
  • Russian: жи́дкость (žídkostʹ) — any state of matter which can flow
  • Russian: флюи́д (fljuíd) — any state of matter which can flow
  • Serbo-Croatian: течност — any state of matter which can flow
  • Serbo-Croatian: tečnost — any state of matter which can flow
  • Slovene: tekočína — any state of matter which can flow
  • Spanish: fluido — any state of matter which can flow
  • Swedish: vätska — any state of matter which can flow
  • Tagalog: lapuyot — any state of matter which can flow
  • Thai: ของไหล (kɔ̌ɔng-lǎi) — any state of matter which can flow
  • Turkish: akışkan — any state of matter which can flow
  • Vietnamese: chất lưu — any state of matter which can flow
  • Chinese Mandarin: 液體 /液体 (yètǐ) — liquid — see also liquid
  • Dutch: vloeistof — liquid — see also liquid
  • Estonian: vedelik — liquid — see also liquid
  • Finnish: neste — liquid — see also liquid
  • French: liquide — liquid — see also liquid
  • Hindi: द्रव (drav) — liquid — see also liquid
  • Hindi: तरल (taral) — liquid — see also liquid
  • Indonesian: cairan — liquid — see also liquid
  • Irish: sreabhán — liquid — see also liquid
  • Malayalam: ദ്രാവകം (drāvakaṁ) — liquid — see also liquid
  • Portuguese: fluido — liquid — see also liquid
  • Portuguese: líquido — liquid — see also liquid
  • Russian: жи́дкость (žídkostʹ) — liquid — see also liquid
Real reading context

fluid in complete knowledge articles