1. (prep.) Through.

2. (a.) Passing through; as, thorough lights in a house.

3. (a.) Passing through or to the end; hence, complete; perfect; as, a thorough reformation; thorough work; a thorough translator; a thorough poet.

4. (adv.) Thoroughly.

5. (adv.) Through.

6. (n.) A furrow between two ridges, to drain off the surface water.

absolute all-embracing all-encompassing all-inclusive all-out all-pervading arrant assiduous blow-by-blow born broad-based canny careful cautious chronic circumspect classical clean clear complete comprehensive confirmed congenital conscientious consummate crass decided deep-dyed deep-fixed deep-rooted deep-seated deep-set deep-settled definitive deliberate detailed diligent discreet downright dyed-in-the-wool egregious elaborate encyclopedic established exhaustive extensive fast full full-dress fully realized gingerly glaring gross guarded heedful hesitant implanted incorrigible inculcated industrious infixed ingrained instilled intensive intolerable inveterate irreversible itemized judicious leaving out nothing long-established methodical meticulous mindful minute noncommittal omnibus omnipresent on guard operose out-and-out outright overlooking no possibility painstaking particular particularized pawky perfect pervasive plain plumb polished politic positive precious profound pronounced proper prudent pure radical rank regardful regular rooted safe scrupulous sedulous set settled settled in habit shattering sheer shocking slow to act stark stark-staring straight superlative surpassing sweeping tentative the veriest thoroughgoing through-and-through total ubiquitous unadventurous unalloyed unbearable uncommunicative unconditional unconscionable undaring undeniable undiluted unenterprising unequivocal universal unmitigated unmixed unprecipitate unqualified unrelieved unreserved unrestricted unspoiled utter veritable wholesale