euphonize

From euphony +‎ -ize.

euphonize (third-person singular simple present euphonizes, present participle euphonizing, simple past and past participle euphonized)

1. (transitive) To make euphonic; to harmonize.

• “euphonize”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.