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Definition of retard

retard

/rɪˈtɑːrd/
re · tard

Plural:retards
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Adjective:retarded
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Past Simple:retarded
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Past Participle:retarded
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Present Participle:retarding
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retard Lexical Profile

retard Game Scores & Validity

• verb

1

To delay, impede, or hold back the progress, development, or accomplishment of something.

Example

"Cold temperatures will significantly retard the germination of these seeds."

Synonyms
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Antonyms
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• noun

1

A person with an intellectual disability, or a foolish or socially inept person (dated and offensive).

Example

"Using the word as a casual insult is widely condemned by disability advocacy groups."


2

A holding back, slowing down, or delay in progress, development, or timing (especially of an engine's ignition or a musical tempo).

Example

"The mechanic adjusted the ignition timing to correct the excessive retard at high speeds."

Synonyms
View all synonyms for retard
Antonyms
View all antonyms for retard

Word Nuance & Usage

As a verb meaning 'to slow down or delay' (stressed on the second syllable), 'retard' remains standard in formal, technical, and scientific contexts (as in 'flame retardant'). However, as a noun (stressed on the first syllable) referring to a person with an intellectual disability or used as an insult, it is considered a deeply offensive slur in modern English.

• Rhymes for retard

Word Origin & Etymology

Borrowed in the late 15th century from Middle French retarder, from Latin retardare ('to make slow, delay, or hinder'), formed from re- ('back') and tardus ('slow').

Cite this Entry


Wordmom. (2026). Definition of Retard. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/retard
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