T square, absolute, absolutely, accurately, all-embracing, all-encompassing, all-out, all-pervading, answer, aplomb, appraise, appreciate, assay, assess, at right angles, azimuth circle, bang, bar, barricade, batten, batten down, bob, bolt, born, bottom, broad-based, button, button up, calculate, calibrate, caliper, cast the lead, check a parameter, choke, choke off, clap, clean, clear, clear up, close, close up, come alive, completely, comprehensive, compute, congenital, constrict, consummate, contain, contract, cover, crack, dead, debug, decipher, decode, deep-dyed, definitely, delve, delve into, descry, dial, dig into, directly, discern, disentangle, divide, divine, do, dope, dope out, downright, dyed-in-the-wool, egregious, entirely, estimate, evaluate, even, exactly, exhaustive, explain, explore, expressly, faithfully, fasten, fathom, figure out, find out, find the answer, find the solution, flush, fold, fold up, full, fully, gauge, get, get right, go into, graduate, guess, guess right, have it, hit it, in all respects, in every respect, indagate, intensive, interpret, investigate, ipsissimis verbis, irretrievably, irrevocably, just, kerplunk, key, latch, lead, literally, literatim, lock, lock out, lock up, look into, make a sounding, make out, measure, mensurate, mete, meter, normal, occlude, omnibus, omnipresent, open the lock, orthodiagonal, orthogonal, out-and-out, outright, pace, padlock, peer into, penetrate, perceive, perfect, perfectly, perpendicular, perpendicularly, pervasive, pierce, plain, plop, plumb bob, plumb line, plumb rule, plumb the depths, plumb-line, plummet, plump, plunging, plunk, point-blank, poke into, positively, precipitous, precisely, prize, probe, pry into, psych, psych out, pure, puzzle out, quantify, quantize, quite, radical, rate, ravel, ravel out, regular, resolve, riddle, right, right angle, right-angle, right-angled, right-angular, rigidly, rigorously, sandbag, seal, seal off, seal up, search into, secure, see, see daylight, see into, see the light, see through, set, set square, sheer, sheerly, shut, shut the door, shut up, sift, sinker, size, size up, slam, slap, sling the lead, smack, smack-dab, snap, solve, sort out, sound, span, spang, spot, square, squarely, squeeze shut, stark, steep, step, straight, straight-up, straight-up-and-down, strangle, strictly, survey, sweeping, take a reading, take soundings, thorough, thoroughgoing, thoroughly, through-and-through, to the letter, total, triangulate, try square, ubiquitous, unconditional, undeviatingly, undo, unerringly, universal, unlock, unmitigated, unqualified, unravel, unrelievedly, unreserved, unrestricted, unriddle, unscramble, untangle, untwist, unweave, up and down, up-and-down, upright, utter, utterly, valuate, value, verbally, verbatim, verbatim et litteratim, veritable, vertical, vertical circle, weigh, weight, wholesale, wholly, word by word, word for word, work, work out, zip up, zipper
be deep, render deep, deepen, plunge, sound, fathom, plumb, cast the lead, heave the lead, take soundings, make soundings, dig.
verticality, erectness, perpendicularity, right angle, normal, azimuth circle, wall, precipice, cliff, elevation, erection, square, plumb line, plummet, vertical, upright, erect, perpendicular, plumb, normal, straight, bolt, upright, rampant, standing up, rectangular, orthogonal, vertically, up, on end, up on end, right on end, a plomb, endwise, one one's legs, at right angles.
close, occlude, plug, block up, stop up, fill up, bung up, cork up, button up, stuff up, shut up, dam up, blockade, obstruct, bar, bolt, stop, seal, plumb, choke, throttle, ram down, dam, cram, trap, clinch, put to the door, shut the door.
measure, mete, determine, assay, evaluate, value, assess, rate, appraise, estimate, form an estimate, set a value on, appreciate, standardize, span, pace step, apply the compass, gauge, plumb, probe, sound, fathom, heave the log, heave the lead, survey, weigh, take an average, graduate.