Standard Lemma guide

retard

noun · verb · 14 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: /ɹɪˈtɑːd/
  • Received-Pronunciation: [ɹwɪˈthɑːd]
  • UK: Recorded audio is listed in the source snapshot.
  • General-American: /ɹɪˈtɑɹd/
  • General-American: [ɹwɪˈthɑɹd]
  • US: Recorded audio is listed in the source snapshot.
  • Received-Pronunciation: /ˈɹiːtɑːd/
  • Received-Pronunciation: [ˈɹwɪi̯tɑːd]
  • UK: Recorded audio is listed in the source snapshot.
  • General-American: /ˈɹiːtɑɹd/
  • General-American: [ˈɹwɪi̯thɑɹd]
  • US: Recorded audio is listed in the source snapshot.
  • rhymes with -ɑː(ɹ)d
  • CMU ARPABET: R IH0 T AA1 R D Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
  • CMU ARPABET 2: R IY0 T AA1 R D Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

A retardation; a delay.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: delay, hold-up, retardation

Antonyms: none provided

2

noun

Meaning 2

A slowing down of the tempo; a ritardando.

Definition source: English Wiktionary via Wiktextract

Topics: entertainment, lifestyle, music

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

A person with mental retardation.

Definition source: English Wiktionary via Wiktextract

Usage: dated, offensive

Examples

  • The retard in our class needs special help.

Meaning relationships

Synonyms: tard, imbecile, idiot, moron

Antonyms: none provided

4

noun

Meaning 4

A person or being who is extremely stupid or slow to learn.

Definition source: English Wiktionary via Wiktextract

Usage: informal, offensive

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: imbecile, moron, idiot, alcatote, asshat, arsehole, asshole, bayard, berk, birdbrain, blither, bobchin, bonehead, bozo, buffoon, brickhead, Charlie, chucklehead, chowderhead, chump, clart, clown, der-brain, dill pickle, dim bulb, dimwit, dingleberry, dipshit, dipstick, dirtbrain, div, divvo, divvy, dolt, donk, doodle, doofus, dope, dork, dote, dotterel, dullard, dumbass, dumbbell, dumbo, dumb fuck, dummy, dunce, dunderhead, dupe, fathead, fenderhead, fiddle, fuckwit, fuzznut, geck, gig, gink, goober, gooseberry, gowk, gubbins, gump, half-baked, ha'p'orth, Homer Simpson, ignoramus, jamoke, jerk, jerkoff, jolterhead, jolthead, juggins, jughead, knucklehead, lamebrain, mameluke (US (Italian-American), slang), maroon, meathead, mong, mug, muggins, mushhead, nimrod, nincompoop, nit, nitwit, not the sharpest knife in the drawer, numskull, numps, numpty, nupson, oaf, pillock, pinhead, plonker, prat, retard, shit for brains, shithead, shitwit, schmo, schmuck, smooth brain, snapperhead, softhead, sohai, sot, stupid, sucker, thickhead, tonto, tool, tosser, tosspot, tubelight, twat, twerp, twit, wally, wantwit, wazzock, yampy, addle-brain, addlehead, addle pate, airhead, baboon, beanbrain, beetlebrain, beetlehead, bimbo, blockhead, blubberbrain, Boeotian, boob, brainlet, bubblehead, bubble brain, bufflehead, cittern-head, clod, clodpate, clot, crackhead, cretin, cuckoo, deadhead, dimbo, dimbus, dingbat, ding dong, dingwad, dip, doldrum, donut, doof, doofoid, drivel, drongo, drool bucket, dumb bunny, dumb cluck, dumbhead, dumble, dumbling, dumbnut, dummkopf, dunderpate, eejit, featherbrain, fleabrain, fool, fopdoodle, galoot, gimboid, gomer, gonk, goof, goofball, goofy, goon, goose, goosecap, gorbuson, gudgeon, halfwit, ha'porth, hammerhead, inbred, jackaninny, jellybrain, knothead, lackwit, log, loggerhead, lummox, lunk, lunkhead, meatball, mental midget, mome, momo, mongoloid, mongtard, monkey, mouth breather, muttonhead, mutt, ninny, ninnyhammer, noddy, noodlehead, numbskull, peabrain, peagoose, pigwidgeon, plank, put, putz, sap, saphead, silly, simp, simpleton, space cadet, spanner, stupe, stupid-head, tard, thickskull, thicko, tomfool, toolbox, turkey, wazzer, witless wonder, yo-yo, zany, Vulgar:, ass, assclown, asshead, asstard, asswipe, buttbreath, dildo, donkey dick, Alternative spelling of dumbass., dumbfuck, dumbfucker, dumbshit, farthead, fuck-knuckle, fucktard, jackass, peckerhead, shitbrain, shitneck

Antonyms: none provided

5

verb

Meaning 5

To keep delaying; to continue to hinder; to prevent from progressing.

Definition source: English Wiktionary via Wiktextract

Usage: transitive

Examples

  • retard the march of an army
  • retard the motion of a ship

Meaning relationships

Synonyms: impede, hinder, hold up

Antonyms: none provided

6

verb

Meaning 6

To put off; to postpone.

Definition source: English Wiktionary via Wiktextract

Usage: transitive

Examples

  • to retard the attacks of old age
  • to retard a rupture between nations

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

verb

Meaning 7

To be slow or dilatory to perform (something).

Definition source: English Wiktionary via Wiktextract

Usage: obsolete, transitive

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

8

verb

Meaning 8

To decelerate; to slow down.

Definition source: English Wiktionary via Wiktextract

Usage: intransitive

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

9

verb

Meaning 9

To stay back.

Definition source: English Wiktionary via Wiktextract

Usage: intransitive, obsolete

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

10

noun

Meaning 10

a person of subnormal intelligence

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: idiot, imbecile, cretin, moron, changeling, half-wit

Antonyms: none provided

Broader terms: simpleton, simple

Narrower terms: mongoloid

11

verb

Meaning 11

cause to move more slowly or operate at a slower rate

Definition source: Princeton WordNet 3.0

Examples

  • This drug will retard your heart rate

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: decelerate, slow down

Narrower terms: deaden

12

verb

Meaning 12

lose velocity; move more slowly

Definition source: Princeton WordNet 3.0

Examples

  • The car decelerated

Meaning relationships

Synonyms: decelerate, slow, slow down, slow up

Antonyms: none provided

Broader terms: decrease, diminish, lessen, fall

Narrower terms: slow, slow down, slow up, delay, detain, hold up

13

verb

Meaning 13

slow the growth or development of

Definition source: Princeton WordNet 3.0

Examples

  • The brain damage will retard the child's language development

Meaning relationships

Synonyms: check, delay

Antonyms: none provided

Broader terms: change, alter, modify

Narrower terms: dampen, stay, detain, delay

14

verb

Meaning 14

be delayed

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: be

History

Etymology

From Middle English retarden, from Anglo-Norman or Latin, from Anglo-Norman retarder, from Latin retardāre (“to retard”, from re- + tardus (“slow”)).

Across languages

Translations

85 source translations are retained for this English entry.

  • Afrikaans: vertraging — retardation; delay
  • Afrikaans: vertragings — retardation; delay
  • Finnish: viive — retardation; delay
  • Finnish: hidaste — retardation; delay
  • French: retard — retardation; delay
  • German: Verzögerung — retardation; delay
  • German: Verspätung — retardation; delay
  • Latvian: kavēšanās — retardation; delay
  • Latvian: vilcināšanās — retardation; delay
  • Russian: замедле́ние (zamedlénije) — retardation; delay
  • Russian: заде́ржка (zadéržka) — retardation; delay
  • Spanish: perecear — retardation; delay
  • Swedish: försening — retardation; delay
  • Swedish: fördröjning — retardation; delay
  • Afrikaans: vertraagde — a person with mental retardation
  • Afrikaans: vertraagdes — a person with mental retardation
  • Afrikaans: mongool — a person with mental retardation
  • Afrikaans: mongole — a person with mental retardation
  • Albanian: prapambetje mentale — a person with mental retardation
  • Czech: retard — a person with mental retardation
  • Czech: retardka — a person with mental retardation
  • Finnish: henkisesti jälkeenjäänyt — a person with mental retardation
  • Finnish: see also Thesaurus:vammainen — a person with mental retardation
  • French: retardé — a person with mental retardation
  • Greek: καθυστερημένος (kathysteriménos) — a person with mental retardation
  • Greek: βλαμμένος (vlamménos) — a person with mental retardation
  • Italian: ritardato — a person with mental retardation
  • Italian: ritardato mentale — a person with mental retardation
  • Japanese: 知恵遅れ (chieokure) — a person with mental retardation
  • Polish: debil — a person with mental retardation
  • Polish: kaleka umysłowy — a person with mental retardation
  • Russian: деби́л (debíl) — a person with mental retardation
  • Spanish: retrasado — a person with mental retardation
  • Spanish: retrasada — a person with mental retardation
  • Spanish: retrasado mental — a person with mental retardation
  • Spanish: retardado mental — a person with mental retardation
  • Yiddish: תּם (tam) — a person with mental retardation
  • Afrikaans: idioot — a stupid person, or one who is slow to learn
  • Afrikaans: idiote — a stupid person, or one who is slow to learn
  • Afrikaans: nool — a stupid person, or one who is slow to learn
  • Afrikaans: nole — a stupid person, or one who is slow to learn
  • Chinese Mandarin: 笨蛋 (bèndàn) — a stupid person, or one who is slow to learn
  • Chinese Mandarin: 傻子 (shǎzi) — a stupid person, or one who is slow to learn
  • Chinese Mandarin: 傻逼 (shǎbi) — a stupid person, or one who is slow to learn
  • Chinese Mandarin: 智障 (zhìzhàng) — a stupid person, or one who is slow to learn
  • Czech: retard — a stupid person, or one who is slow to learn
  • Czech: retardka — a stupid person, or one who is slow to learn
  • Dutch: mogool — a stupid person, or one who is slow to learn
  • Finnish: vammainen — a stupid person, or one who is slow to learn
  • Finnish: vähä-älyinen — a stupid person, or one who is slow to learn
  • Finnish: see also Thesaurus:vammainen — a stupid person, or one who is slow to learn
  • Finnish: kehari — a stupid person, or one who is slow to learn
  • French: attardé — a stupid person, or one who is slow to learn
  • Korean: 병신 (byeongsin) — a stupid person, or one who is slow to learn
  • Russian: то́рмоз (tórmoz) — a stupid person, or one who is slow to learn
  • Spanish: retrasado — a stupid person, or one who is slow to learn
  • Spanish: retrasada — a stupid person, or one who is slow to learn
  • Spanish: retrasado mental — a stupid person, or one who is slow to learn
  • Spanish: retardado mental — a stupid person, or one who is slow to learn
  • Swedish: idiot — a stupid person, or one who is slow to learn
  • Swedish: mongo — a stupid person, or one who is slow to learn
  • Yiddish: תּם (tam) — a stupid person, or one who is slow to learn
  • Afrikaans: vertraag — keep delaying; impede; etc
  • Finnish: hidastaa — keep delaying; impede; etc
  • Finnish: viivyttää — keep delaying; impede; etc
  • Finnish: jarruttaa — keep delaying; impede; etc
  • German: verhindern — keep delaying; impede; etc
  • Latvian: kavēt — keep delaying; impede; etc
  • Latvian: vilcināt — keep delaying; impede; etc
  • Russian: заде́рживать (zadérživatʹ) — keep delaying; impede; etc
  • Spanish: retardar — keep delaying; impede; etc
  • Spanish: remorar (disused) — keep delaying; impede; etc
  • Afrikaans: uitstel — put off; postpone
  • Finnish: siirtää tuonnemmaksi — put off; postpone
  • Finnish: lykätä — put off; postpone
  • German: verschieben — put off; postpone
  • German: aufschieben — put off; postpone
  • Ido: tardigar — put off; postpone
  • Latvian: jūgt ārā — put off; postpone
  • Latvian: jūgt nost — put off; postpone
  • Russian: откла́дывать (otkládyvatʹ) — put off; postpone
  • Spanish: retardar — put off; postpone
  • Spanish: remorar (disused) — put off; postpone
  • Afrikaans: agterbly — stay back
  • German: zurückbleiben — stay back