late 15c., "make slow or slower," from French retarder "restrain, hold (someone) back, keep (someone from doing something); come to a stop" (13c.) or directly from Latin retardare "make slow, delay, keep back, hinder" (see retardation). Related: Retarded; retarding.
The noun is recorded from 1788 in the sense "retardation, delay;" from 1970 in offensive meaning "retarded person," originally American English, with accent on first syllable. Other words used for "one who is mentally retarded" include retardate (1956), retardee (1971).
例文
1. Continuing violence will retard negotiations over the country 's future.
継続的な暴力活動は、国の将来にかかわる交渉の進行を妨げる。
2.What the hell do I want with an emotional retard ？
感情的なバカと一緒にいて、私は一体何を図ろうとしているのか。
3.Numerous and extensive eddy cavities retard the turbulent mixing process.
多くて大きな渦領域は摂動の混合過程を遅らせた。
4.Writing may retard the process of language change under certain conditions.
場合によっては、文字が言語の変化を遅らせる可能性があります。
5.All agencies that provoke change and all that retard it can be discribed as 'good 'or 'bad 'respectively.