Meaning of VALID in English

VALID

adj. 25B6; adjective

a valid criticism : WELL FOUNDED, sound, reasonable, rational, logical, justifiable, defensible, viable, bona fide; cogent, effective, powerful, convincing, credible, forceful, strong, weighty.

a valid contract : LEGALLY BINDING, lawful, legal, official, signed and sealed, contractual; in force, in effect, effective.

Concise Oxford thesaurus English vocabulary.      Краткий оксфордский словарь английского языка тезаурус.