adj. 25B6; adjective
a thorough investigation : RIGOROUS, in-depth, exhaustive, thoroughgoing, minute, detailed, close, meticulous, methodical, careful, complete, comprehensive, full, extensive, widespread, sweeping, all-embracing, all-inclusive.
he is slow but thorough : METICULOUS, scrupulous, assiduous, conscientious, painstaking, punctilious, methodical, careful, diligent, industrious, hard-working.
the child is being a thorough nuisance : UTTER, downright, thoroughgoing, absolute, complete, total, out-and-out, arrant, real, perfect, proper, sheer, unqualified, unmitigated; Brit. informal right; Austral./NZ informal fair.
superficial, cursory, careless.