Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb ratify

1 sense of ratify

Sense 1
sign, ratify -- (approve and express assent, responsibility, or obligation; "All parties ratified the peace treaty"; "Have you signed your contract yet?")
       => validate, formalize, formalise -- (declare or make legally valid)

Antonyms of adj ratified

1 sense of ratified

Sense 1
ratified, sanctioned -- (formally approved and invested with legal authority)

INDIRECT (VIA legal) -> illegal -- (prohibited by law or by official or accepted rules; "an illegal chess move")

Similarity of adj ratified

1 sense of ratified

Sense 1
ratified, sanctioned -- (formally approved and invested with legal authority)
       => legal (vs. illegal) -- (established by or founded upon law or official or accepted rules)