They are not perfect homophones. There is a slight i (IPA j) in "mute". https://en.wiktionary.org/wiki/mute https://en.wiktionary.org/wiki/mute https://en.wik

They are not perfect homophones. There is a slight i (IPA j) in "mute". https://en.wiktionary.org/wiki/mute https://en.wiktionary.org/wiki/mute https://en.wiktionary.org/wiki/moot https://en.wiktionary.org/wiki/moot