dissimilitude(n = noun.attribute) unlikeness - dissimilarity evidenced by an absence of likeness;
is a kind of dissimilarity, unsimilarity
Antonym: similitude

dissimilitude, n. unlikeness, dissimilarity.

Etymology:
L dissimilitudo (as DISSIMILATE)

N  nonuniformity, diversity, irregularity, unevenness, multiformity, unconformity, roughness, dissimilarity, dissimilitude, divarication, divergence, diversified varied, irregular, uneven, rough, multifarious, multiform, of various kinds, all manner of, all sorts of, all kinds of, variously, in all manner of ways, here there and everywhere.

N  disagreement, discord, discordance, dissonance, dissidence, discrepancy, unconformity, incongruity, incongruence, discongruity, mesalliance, jarring, dissension, conflict, bickering, clashing, misunderstanding, wrangle, disparity, mismatch, disproportion, dissimilitude, inequality, disproportionateness, variance, divergence, repugnance, unfitness, inaptitude, impropriety, inapplicability, inconsistency, inconcinnity, irrelevancy, misjoining, misjoinder, syncretism, intrusion, interference, concordia discors, fish out of water, disagreeing, discordant, discrepant, at variance, at war, hostile, antagonistic, repugnant, incompatible, irreconcilable, inconsistent with, unconformable, exceptional, intrusive, incongruous, disproportionate, disproportionated, inharmonious, unharmonious, inconsonant, unconsonant, divergent, repugnant to, inapt, unapt, inappropriate, improper, unsuited, unsuitable, inapplicable, not to the point, unfit, unfitting, unbefitting, unbecoming, illtimed, unseasonable, mal a propos, inadmissible, inapposite, uncongenial, ill-assorted, ill-sorted, mismatched, misjoined, misplaced, misclassified, unaccommodating, irreducible, incommensurable, uncommensurable, unsympathetic, out of character, out of keeping, out of proportion, out of joint, out of tune, out of place, out of season, out of its element, at odds with, at variance with, in defiance, in contempt, in spite of, discordantly, a tort et a travers, asinus ad lyram.