List of uncongenial synonyms and uncongenial related words.
Olympian, abhorrent, aloof, antagonistic, antipathetic, at cross-purposes, at loggerheads, at odds, at variance, at war, autistic, backward, bashful, blank, chilled, chilly, clashing, close, cold, constrained, contradictory, contrary, cool, cranky, cross, detached, differing, disaccordant, disagreeable, disagreeing, discordant, discreet, discrepant, disharmonious, dislikable, displeasing, disproportionate, dissident, dissociable, dissonant, distant, distasteful, divergent, expressionless, forbidding, frigid, frosty, grating, guarded, hostile, icy, immiscible, impassive, impersonal, inaccessible, inaccordant, incompatible, inharmonious, insociable, intolerable, introverted, jangling, jarring, mislikable, modest, mopey, mopish, morose, negative, nongregarious, odious, offish, out of accord, out of whack, remote, removed, repressed, repugnant, reserved, restrained, reticent, retiring, self-contained, self-sufficient, shrinking, snug, socially incompatible, standoff, standoffish, subdued, sullen, suppressed, unaffable, unapproachable, unclubbable, uncommunicative, uncompanionable, undemonstrative, unexpansive, unfriendly, ungenial, unharmonious, uninviting, unlikable, unlovable, unpleasant, unsociable, unsocial, variant, withdrawn