abysm, abyss, aperture, arrearage, arroyo, bottom, bottom glade, bottoms, box canyon, breach, break, breakage, broaching, burst, caesura, canyon, cavity, cessation, chap, chasm, check, chimney, chink, chip, clearing, cleavage, cleave, cleft, cleuch, clough, clove, col, coulee, couloir, crack, cranny, crevasse, crevice, cut, cut apart, cwm, dale, defalcation, defect, deficiency, deficit, defile, dehisce, delay, dell, difference, dike, dingle, disagreement, disclosure, discontinuity, discrepancy, disparity, disruption, distance, distinction, ditch, divergence, division, donga, draw, excavation, fault, fenestra, fissure, fistula, flaw, flume, fontanel, foramen, fracture, furrow, gape, gash, gat, gill, glen, gorge, groove, grove, gulch, gulf, gully, halt, hang open, hiatus, hole, hollow, incise, incision, inconsistency, inlet, interim, intermission, interruption, interspace, interval, intervale, joint, kloof, lack, lacuna, laying open, leak, letup, lull, lunar rill, missing link, moat, need, notch, nullah, omission, open, opening, opening up, orifice, oscitate, outage, outlet, pass, passage, passageway, pause, pore, ravine, recess, rent, respite, rest, rift, rime, rip, rive, rupture, scale, scissure, seam, separation, shortage, slash, slice, slit, slot, space, splinter, split, stoma, stop, strath, suspension, tear, throwing open, trench, trough, ullage, uncorking, unstopping, vale, valley, void, wadi, wait, want, wantage, yawn
imperfection, imperfectness, deficiency, inadequacy, peccancy, immaturity, fault, defect, weak point, screw loose, flaw, gap, twist, taint, attainder, bar sinister, hole in one's coat, blemish, weakness, half blood, shortcoming, drawback, seamy side, mediocrity, no great shakes, no great catch, not much to boast of, one-horse shay, imperfect, not perfect, deficient, defective, faulty, unsound, tainted, out of order, out of tune, cracked, leaky, sprung, warped, lame, injured, peccant, frail, inadequate, crude, incomplete, found wanting, below par, short-handed, below its full strength, under its full strength, below its full complement, indifferent, middling, ordinary, mediocre, average, so-so, coucicouci, milk and water, tolerable, fair, passable, pretty well, pretty good, rather good, moderately good, good, good enough, well enough, adequate, decent, not bad, not amiss, inobjectionable, unobjectionable, admissible, bearable, only better than nothing, secondary, inferior, second-rate, second-best, one-horse, almost, to a limited extent, rather, pretty, moderately, passing, only, considering, all things considered, enough, surgit amari aliquid.
incompleteness, deficiency, short measure, shortcoming, insufficiency, imperfection, immaturity, half measures, defect, deficit, defalcation, omission, caret, shortage, interval, break, noncompletion, missing link, missing piece, missing part, gap, hole, lacuna, incomplete, imperfect, unfinished, uncompleted &c (complete), defective, deficient, wanting, lacking, failing, in default, in arrear, short of, hollow, meager, lame, halfand-half, perfunctory, sketchy, crude, mutilated, garbled, docked, lopped, truncated, in progress, in hand, going on, proceeding, incompletely, by halves, caetera desunt, caret.
discontinuity, disjunction, anacoluthon, interruption, break, fracture, flaw, fault, crack, cut, gap, solution of continuity, caesura, broken thread, parenthesis, episode, rhapsody, patchwork, intermission, alternation, dropping fire, discontinuous, unsuccessive, broken, interrupted, dicousu, disconnected, unconnected, discrete, disjunctive, fitful, spasmodic, desultory, intermitting, occasional, intermittent, alternate, recurrent, at intervals, by snatches, by jerks, by skips, by catches, by fits and starts, skippingly, per saltum, longo intervallo, like 'angel visits few and far between'.
interval, interspace, separation, break, gap, opening, hole, chasm, hiatus, caesura, interruption, interregnum, interstice, lacuna, cleft, mesh, crevice, chink, rime, creek, cranny, crack, chap, slit, fissure, scissure, rift, flaw, breach, rent, gash, cut, leak, dike, ha-ha, gorge, defile, ravine, canon, crevasse, abyss, abysm, gulf, inlet, frith, strait, gully, pass, furrow, abra, barranca, barranco, clove, gulch, notch, yawning gulf, hiatus maxime, hiatus valde deflendus, parenthesis, void, incompleteness, period, interim (time), with an interval, far between, breachy, rimose, rimulose, at intervals, longo intervallo.