Origin: 1640–50; <
Medieval Latin validātus (past participle of
validāre to make valid), equivalent to
valid- (
see valid) +
-ātus -ate1 Related formsval·i·da·tion, noun
val·i·da·tor, noun
val·i·da·to·ry /ˈvælɪdəˌtɔri, -ˌtoʊri/ Show Spelled[val-i-duh-tawr-ee, -tohr-ee] Show IPA, adjective non·val·i·da·tion, noun
re·val·i·date, verb (used with object), re·val·i·dat·ed, re·val·i·dat·ing.
EXPANDre·val·i·da·tion, noun
un·val·i·dat·ed, adjective
un·val·i·dat·ing, adjective
COLLAPSESynonyms
1. authenticate, verify, prove.
Antonyms
1. disprove.