Synonyms for Harmonize (same or very similar meaning)
WordNet sense 1 (go together):
accord, agree, concord, consort, harmonise, consort, fit in
WordNet sense 2 (bring into consonance or accord):
reconcile
WordNet sense 3 (bring into consonance, harmony, or accord while making music or singing):
chord
From the ODE community, based on WordNet
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