1. The American HeritageÂ® Stedman's Medical Dictionary The Dictionary.com Word Of The Year For 2020 Is â¦. Choose the Right Synonym for contravene deny, gainsay, contradict, contravene mean to refuse to accept as true or valid. contra-MEANING: against SW: contradict, contraband, EX: contraflow, contralateral How a word relays the prefix meaning: If someone contradicts someone, they are against them. Yes, contra is the prefix. What is the meaning of contra-? Master these essential literary terms and youâll be talking like your English teacher in no time. Synonym Discussion of contravene. See the definition Can you identify the antonym of âprotagonist,â or the opposite of a hero or heroine? This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. Often-- but not always-- they are used with a root from the same language. Anti-: Prefix generally meaning "against, opposite or opposing, and contrary." A vocabulary list featuring Power Prefix: Anti. âMonolithâ vs. âMegalithâ: Whatâs The Difference? See also: counter-. from The Century Dictionary. âHaveâ vs. âHasâ: When To Use Each One, âAffectâ vs. âEffectâ: Use The Correct Word Every Time. Some of the most representative words that include it are: contradict, contrary, contraceptive A prefix of Latin origin, meaning âagainst,â âover against,â âoppositeâ; doublet of counter -.