Antonyms of adj obvious

1 sense of obvious

Sense 1
obvious (vs. unobvious) -- (easily perceived by the senses or grasped by the mind; "obvious errors")

unobvious (vs. obvious) -- (not immediately apparent; "in mathematical science connections are exhibited which...are extremely unobvious"- A.N.Whitehead)
        => unapparent -- (not readily apparent; "the answer was at first unapparent")
        => unprovable -- (not provable; "it was both unproved and unprovable")

Similarity of adj obvious

1 sense of obvious

Sense 1
obvious (vs. unobvious) -- (easily perceived by the senses or grasped by the mind; "obvious errors")
       => apparent, evident, manifest, patent, plain, unmistakable -- (clearly revealed to the mind or the senses or judgment; "the effects of the drought are apparent to anyone who sees the parched fields"; "evident hostility"; "manifest disapproval"; "patent advantages"; "made his meaning plain"; "it is plain that he is no reactionary"; "in plain view")
       => axiomatic, self-evident, taken for granted (predicate) -- (evident without proof or argument; "an axiomatic truth"; "we hold these truths to be self-evident")
       => demonstrable, provable -- (capable of being demonstrated or proved; "obvious lies"; "a demonstrable lack of concern for the general welfare"; "practical truth provable to all men"- Walter Bagehot)
       => frank -- (clearly manifest; evident; "frank enjoyment")
       => open-and-shut -- (so obvious as to be easily solved or decided; "an open-and-shut case")
       => self-explanatory -- (needing no explanation)
       => transparent -- (easily understood or seen through (because of a lack of subtlety); "a transparent explanation"; "a transparent lie")
       => writ large -- (made more obvious or prominent; "the effect of...his irregular life could be seen writ large on his gaunt features")
          Also See-> overt#1, open#16