thorny, a. spiny, briery, [prickly]; [vexatious], [troublesome], [annoying].
thorough, a. [complete], [profound]. Antonyms: superficial, cursory, [partial], sciolistic.
thought, n. [reflection], cogitation, revery, musing, [meditation], [consideration], [abstraction], [imagination], [brown study], contemplation, [deliberation], introspection, retrospection, lucubration, [rumination], preoccupation, excogitation; [idea], [concept], [surmise], [inference].
thoughtful, a. contemplative, [meditative], reflective, cogitative, wistful, [pensive], preoccupied, [abstracted]; [considerate], [heedful], circumspect, [wary].
thoughtless, a. [inconsiderate], [careless], [unmindful], [remiss], [rash], inadvertent, [indiscreet], heedless, unreasoning.
thousand, n. Associated words: millennium, millennial, chiliad, chiliasm, chiliarchy, chiliarch, chiliast, millenary, millesimal.
thrash, v. thresh.
thread, n. filament, fibre, stamen, staple, [pile], raveling, lint, [warp], woof, thrum.--v. thrid.
threadbare, a. napless, pileworn, [seedy], [trite], hackneyed.
threat, n. [menace], [threatening], commination, fulmination, intimidation.