Standard Lemma guide

fluctuate

adj · verb · 10 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.

  • /ˈflʌkt͡ʃu.eɪt/
  • /ˈflʌkʃu.eɪt/
  • /ˈflʌktju.eɪt/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • CMU ARPABET: F L AH1 K CH AH0 W EY2 T Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

adj

Meaning 1

Tossed up and down the waves.

Definition source: English Wiktionary via Wiktextract

Usage: obsolete

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adj

Meaning 2

Wavering, fickle.

Definition source: English Wiktionary via Wiktextract

Usage: broadly, obsolete

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

verb

Meaning 3

To vary irregularly; to swing.

Definition source: English Wiktionary via Wiktextract

Usage: intransitive

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

verb

Meaning 4

To undulate.

Definition source: English Wiktionary via Wiktextract

Usage: intransitive

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

verb

Meaning 5

To be irresolute; to waver.

Definition source: English Wiktionary via Wiktextract

Usage: intransitive

Examples

  • I fluctuated between wishing he was back home and wishing I'd never met him.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

verb

Meaning 6

To cause to vary irregularly.

Definition source: English Wiktionary via Wiktextract

Usage: transitive

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

verb

Meaning 7

To rise and fall as a wave; to be tossed up and down the waves.

Definition source: English Wiktionary via Wiktextract

Usage: also, figuratively, literally, rare

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

8

verb

Meaning 8

be unstable

Definition source: Princeton WordNet 3.0

Examples

  • The stock market fluctuates

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: change state, turn

9

verb

Meaning 9

move or sway in a rising and falling or wavelike pattern

Definition source: Princeton WordNet 3.0

Examples

  • the line on the monitor vacillated

Meaning relationships

Synonyms: vacillate, waver

Antonyms: none provided

Broader terms: swing

10

verb

Meaning 10

cause to fluctuate or move in a wavelike pattern

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: move, displace

History

Etymology

First attested in the 1630'; borrowed from Latin flūctuātus, perfect passive participle of flūctuō (“(of the sea) to surge, swell; (of man) to waver, fluctuate”), see -ate (verb-forming suffix) and -ate (adjective-forming suffix).

Across languages

Translations

38 source translations are retained for this English entry.

  • Bulgarian: колебая се (kolebaja se) — to vary irregularly; to swing
  • Bulgarian: меня се (menja se) — to vary irregularly; to swing
  • Catalan: fluctuar — to vary irregularly; to swing
  • Chinese Mandarin: 波動 /波动 (bōdòng) — to vary irregularly; to swing
  • Czech: kolísat — to vary irregularly; to swing
  • Finnish: heilahdella — to vary irregularly; to swing
  • Finnish: vaihdella — to vary irregularly; to swing
  • Finnish: heittelehtiä — to vary irregularly; to swing
  • French: fluctuer — to vary irregularly; to swing
  • German: schwanken — to vary irregularly; to swing
  • German: fluktuieren — to vary irregularly; to swing
  • Greek: κυμαίνομαι (kymaínomai) — to vary irregularly; to swing
  • Hungarian: ingadozik — to vary irregularly; to swing
  • Ido: fluktuar — to vary irregularly; to swing
  • Māori: manei — to vary irregularly; to swing
  • Māori: mānenei — to vary irregularly; to swing
  • Norwegian: svinge — to vary irregularly; to swing
  • Norwegian: fluktuere — to vary irregularly; to swing
  • Persian: نوسان کردن (navasân kardan) — to vary irregularly; to swing
  • Russian: колеба́ться (kolebátʹsja) — to vary irregularly; to swing
  • Russian: меня́ться (menjátʹsja) — to vary irregularly; to swing
  • Bulgarian: меня (menja) — to undulate
  • Bulgarian: варирам (variram) — to undulate
  • Catalan: fluctuar — to undulate
  • French: onduler — to undulate
  • Greek: κυμαίνομαι (kymaínomai) — to undulate
  • Hungarian: hullámzik — to undulate
  • Russian: меня́ться (menjátʹsja) — to undulate
  • Russian: варьи́ровать (varʹírovatʹ) — to undulate
  • Ottoman Turkish: طالغهلانمق (dalgalanmak) — to undulate
  • Bulgarian: колебая се (kolebaja se) — to be irresolute; to waver
  • Bulgarian: двоумя се (dvoumja se) — to be irresolute; to waver
  • German: (hin und her) schwanken — to be irresolute; to waver
  • Hungarian: ingadozik — to be irresolute; to waver
  • Finnish: heilutella — to cause to vary irregularly
  • Finnish: heilautella — to cause to vary irregularly
  • Finnish: heitellä — to cause to vary irregularly
  • Russian: колеба́ть (kolebátʹ) — to cause to vary irregularly