Antonyms of verb approve

2 senses of approve

Sense 1
approve, O.K., okay, sanction -- (give sanction to; "I approve of his educational policies")
       Antonym of disapprove (Sense 2)
      => disapprove, reject -- (deem wrong or inappropriate; "I disapprove of her child rearing methods")

Sense 2
approve -- (judge to be right or commendable; think well of)
       Antonym of disapprove (Sense 1)
      => disapprove -- (consider bad or wrong)

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

2 senses of approve

Sense 1
approve, O.K., okay, sanction -- (give sanction to; "I approve of his educational policies")
       => authorize, authorise, pass, clear -- (grant authorization or clearance for; "Clear the manuscript for publication"; "The rock star never authorized this slanderous biography")

Sense 2
approve -- (judge to be right or commendable; think well of)
       => evaluate, pass judgment, judge -- (form a critical opinion of; "I cannot judge some works of modern art"; "How do you evaluate this grant proposal?" "We shouldn't pass judgment on other people")