Pocket Thesaurus
Antonyms of frank
real, natural, bold, familiar, straight, blunt, direct, free, brazen, plain, upright, open, aboveboard, apparent, artless, candid, downright, easy, flat-out, forthright, guileless, ingenuous, matter-of-fact, naive, outright, outspoken, scrupulous, sincere, straightforward, transparent, truthful, unconcealed, uninhibited, unreserved, unrestricted, up front, heart-to-heart, bare-faced, call a spade a spade, from the hip, lay it on the line, like it is, plain-spoken, saying what one thinks, undisguised
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