n. 25B6; adjective
a tidy room : NEAT, neat and tidy, as neat as a new pin, orderly, well ordered, in (good) order, well kept, shipshape (and Bristol fashion), in apple-pie order, immaculate, spick and span, uncluttered, straight, trim, spruce.
he's a very tidy person : NEAT, trim, spruce, dapper, well groomed, well turned out; organized, well organized, methodical, meticulous; fastidious; informal natty.
(informal) a tidy sum : LARGE, sizeable, considerable, substantial, generous, significant, appreciable, handsome, respectable, decent, goodly; informal not to be sneezed at.
messy.
25B6; verb
I'd better tidy up the living room : PUT IN ORDER, clear up, sort out, straighten (up), clean up, spruce up.
she tidied herself up in the bathroom : GROOM ONESELF, spruce oneself up, freshen oneself up, smarten oneself up; informal titivate oneself.