mismatch(n = noun.cognition) - a bad or unsuitable match;
is a kind of counterpart, opposite number, vis-a-vis
Derived form verb mismatch₁

   mismatch(v = verb.contact) - match badly; match two objects or people that do not go together;
is one way to couple, match, mate, pair, twin
Derived form noun mismatch₁
Sample sentences: Somebody ----s something; Somebody ----s somebody

   To match unsuitably. [1913 Webster]

mismatch, v. & n.
--v.tr. match unsuitably or incorrectly, esp. in marriage.
--n. a bad match.

VB  be different, differ, vary, ablude, mismatch, contrast, divaricate, differ toto coelo, differ longo intervallo, vary, modify, discriminate.

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.

VB  disagree, clash, jar, interfere, intrude, come amiss, not concern, mismatch, humano capiti cervicem jungere equinam.