1. (n.) Disagreeing; incongruous; being at variance; clashing; opposing; not harmonious.

2. (n.) Dissonant; not in harmony or musical concord; harsh; jarring; as, discordant notes or sounds.

3. (n.) Said of strata which lack conformity in direction of bedding, either as in unconformability, or as caused by a fault.

absonant adversative adverse adversive antagonistic anti antipathetic antithetic antonymous assorted at cross-purposes at loggerheads at odds at variance at war atonal balancing cacophonic cacophonous clashing colliding compensating conflicting confronting contradictory contradistinct contrapositive contrarious contrary contrasted contrasting converse counter counterbalancing counterpoised countervailing cracked cranky cross dead against departing deviating deviative diaphonic different differentiated differing disaccordant disagreeable disagreeing disconsonant discrepant discrete discriminated disharmonic disharmonious disjoined disparate disproportionate dissentient dissident dissimilar dissonant distinct distinguished divergent diverging divers diverse diversified eyeball to eyeball flat grating harsh heterogeneous hostile immelodious immiscible in disagreement inaccordant incompatible incongruent incongruous inconsistent inconsonant inharmonic inharmonious inimical inverse irreconcilable jangling jarring many motley multifarious musicless negative nonmelodious obverse off off-color off-key off-tone opposed opposing opposite oppositional oppositive oppugnant out of accord out of pitch out of tone out of tune out of whack perverse poles apart poles asunder raucous repugnant reverse separate separated several sharp shrill sour squared off strident tuneless unconformable uncongenial unequal unharmonious unlike unmelodious unmusical untunable untuned untuneful variant varied variegated various varying widely apart worlds apart