adj. 25B6; adjective
downright lies : COMPLETE, total, absolute, utter, thorough, out-and-out, outright, sheer, arrant, pure, real, veritable, categorical, unmitigated, unadulterated, unalloyed, unequivocal; Brit. informal proper.
her downright attitude : FRANK, straightforward, direct, blunt, plain-spoken, forthright, uninhibited, unreserved; no-nonsense, matter-of-fact, bluff, undiplomatic; explicit, clear, plain, unequivocal, unambiguous; honest, candid, open, sincere; informal upfront.
25B6; adverb that's downright dangerous : THOROUGHLY, utterly, positively, profoundly, really, completely, totally, entirely; unquestionably, undeniably, in every respect, through and through; informal plain.