thoroughgoing

absolute, all-out, arrant, blank, categorical (also categoric), clean, complete, consummate, cotton-picking, crashing, dead, deadly, definite, downright, dreadful, fair, flat, flat-out, out-and-out, outright, perfect, plumb, profound, pure, rank, regular, sheer, simple, stark, straight-out, thorough, total, unadulterated, unalloyed, unconditional, unmitigated, unqualified, utter, very

all-out, clean, complete, comprehensive, exhaustive, full-scale, out-and-out, thorough, total