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-fono (Suffix) "sound"
Borrowed from Ancient Greek -φωνος ‎(-phonos) 'id.,' a suffix formed from φωνή ‎(phoné) 'id.' From Proto-Indo-European *bhoh2-neh2 "voice," "sound." From earlier *bheh2- "say."
Indo-European
Germanic
Old Norse bǿn "question," English ben 'id.'