bursa (noun) cavity: sunken or decayed area
Sinonime: antagonistic, antipathetic, at odds, cacophonous, clashing, contradictory, contrarient, contrary, different, disagreeing, discordant, discrepant, disharmonious, dissonant, divergent, grating, harsh, incompatible, incongruous, inconsistent, inconsonant, inharmonic, jangling, jarring, on a sour note, opposite, quarreling, rude, strident, uncongenial, unharmonious, unmelodious, unmixable