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verb B2 Upper-Intermediate Uncommon

retard

rih-TAHD

Retard (verb) means to slow down the progress or development of something. Example: “Cold temperatures retard the growth of bacteria in food.”

verb
1
To slow down the progress or development of something.
"Cold temperatures retard the growth of bacteria in food."
noun
1
A delay, or a slowing of pace.
"Engineers built in a slight retard to the ignition timing."

How to use retard

Learner’s notes

In plain EnglishTo hold something back or make it happen more slowly.

When to use it

As a noun referring to a person, this word is an offensive slur and should be avoided entirely; the verb sense (to slow something down) is neutral and still used in technical and formal writing.

Common pairings
retard growth retard progress

Word forms

retarded past tense, retards plural, retards singular

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Etymology

From Latin retardare, "to make slow," from re- + tardus ("slow").

Origin: Latin

hinder slow slow down put off stay back

Antonyms

accelerate speed speed up come forward

Related words

Frequently asked questions

What does “retard” mean?

The word “retard” means to slow down the progress or development of something. In plain terms, to hold something back or make it happen more slowly.

How do you pronounce “retard”?

“Retard” is pronounced rih-TAHD (/ɹɪˈtɑɹd/ in IPA).

How do you use “retard” in a sentence?

Here is “retard” used in a sentence: “Cold temperatures retard the growth of bacteria in food.”

What is another word for “retard”?

Words with a similar meaning to “retard” include hinder, slow, slow down, put off and stay back.

What is the opposite of “retard”?

The opposite of “retard” — its antonyms — are accelerate, speed, speed up and come forward.

What part of speech is “retard”?

Depending on how it is used, “retard” can be a verb and a noun.

Where does the word “retard” come from?

The word “retard” comes from Latin. From Latin retardare, "to make slow," from re- + tardus ("slow").

Is “retard” a common word?

“Retard” is an uncommon word in modern English, usually learned at around the B2 level.

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Definitions: FreeDict original editorial