clear-cut, distinct, trenchant - clearly or sharply defined to the mind; "clear-cut evidence of tampering"; "Claudius was the first to invade Britain with distinct...intentions of conquest"; "trenchant distinctions between right and wrong" Antonym:unclear (indirect, via clear)
clear, clean-cut, clear-cut - clear and distinct to the senses; easily perceptible; "as clear as a whistle"; "clear footprints in the snow"; "the letter brought back a clear image of his grandfather"; "a spire clean-cut against the sky"; "a clear-cut pattern" Antonym:indistinct (indirect, via distinct)