The word 'more inharmonic' implies a sense of dissonance, discordance or lack of harmony. Its antonyms would suggest the opposite - a sense of consonance, accord or harmony. The antonyms for 'more inharmonic' could include 'melodious', 'harmonious', 'concordant', 'tuneful', 'agreeable', 'pleasing', 'musical' and 'sweet-sounding'. Using these antonyms would evoke a sense of positivity, ease and balance. In contrast, 'more inharmonic' might suggest a sense of abrasiveness, discomfort or imbalance. By choosing the appropriate antonyms, a writer or speaker can convey a message that is more nuanced, and evocative of a particular emotion or tone.