Unexpressive1. (a.) Not expressive; not having the power of utterance; inexpressive.
2. (a.) Incapable of being expressed; inexpressible; unutterable; ineffable.
Thesaurus Entries
Olympian, absence, absolute, aloof, arid, awayness, backward, bald, bare, barren, bashful, bewildered, black, blah, bland, blankminded, bleached, blind, blind-alley, bloodless, box, calm, cecal, characterless, chasm, chilled, chilly, chirograph, choked, choked off, clean slate, clear, closed, cold, colorless, complete, confused, constrained, constricted, contracted, cool, dazed, dead, dead-end, deadpan, deprivation, detached, devoid, discomfited, disconcerted, discreet, dismal, distant, docket, document, dossier, downright, draggy, drearisome, dreary, dry, dryasdust, dull, dusty, effete, elephantine, emotionless, emptiness, empty, empty space, empty-headed, empty-minded, empty-pated, empty-skulled, etiolated, expressionless, fade, fatuous, featureless, file, fishy, flat, forbidding, form, frigid, frosty, glassy, guarded, heavy, helpless, ho-hum, hollow, holograph, icy, impassive, impersonal, inaccessible, inane, inanity, incogitant, inexcitable, inexpressive, insipid, instrument, introverted, jejune, lack, leaden, legal document, legal instrument, legal paper, lifeless, line, low-spirited, mindless, modest, naked, neverness, nil, nirvanic, nonexistence, nonoccurrence, nonplussed, nonpresence, nothing, nothingness, nowhereness, nude, null, null and void, oblivious, official document, offish, out-and-out, overlook, oversight, pale, pallid, paper, papers, parchment, passive, pedestrian, perfect, perplexed, personal file, plain, plodding, pointless, poker-faced, poky, ponderous, preterition, pure, quietistic, rattlebrained, rattleheaded, regular, relaxed, remote, removed, repressed, reserved, restrained, reticent, retiring, roll, scatterbrained, scrip, script, scroll, sheer, shrinking, shut, skip, slow, solemn, space, spiritless, squeezed shut, standoff, standoffish, stark, sterile, stiff, stodgy, straight-out, strangulated, stuffy, subdued, subtraction, superficial, suppressed, tabula rasa, tasteless, tedious, thoughtfree, thoughtless, tranquil, unadorned, unadulterated, unaffable, unapproachable, unarrayed, uncomplicated, uncongenial, undecked, undecorated, undemonstrative, undressed, unembellished, unexpansive, unexpressive, unfurbished, ungarnished, ungenial, unideaed, unintellectual, unlively, unmixed, unoccupied, unopen, unopened, unornamented, unqualified, unreasoning, unrelieved, unsophisticated, unthinking, untrimmed, unvarnished, unvented, unventilated, utter, vacant, vacuous, vacuum, vapid, void, want, white, with nothing inside, withdrawn, without content, wooden, writ, writing, zero