Antonyms of adj advisable

1 sense of advisable

Sense 1
advisable (vs. inadvisable) -- (worthy of being recommended or suggested; prudent or wise; "such action is neither necessary nor advisable"; "extreme caution is advisable"; "it is advisable to telephone first")

inadvisable (vs. advisable), unadvisable -- (not prudent or wise; not recommended; "running on the ice is inadvisable")

Similarity of adj advisable

1 sense of advisable

Sense 1
advisable (vs. inadvisable) -- (worthy of being recommended or suggested; prudent or wise; "such action is neither necessary nor advisable"; "extreme caution is advisable"; "it is advisable to telephone first")
       => better (predicate), best (predicate) -- ((comparative and superlative of `well') wiser or more advantageous and hence advisable; "it would be better to speak to him"; "the White House thought it best not to respond")
       => well (predicate) -- (wise or advantageous and hence advisable; "it would be well to start early")
          Also See-> prudent#1; wise#1