If a language was borrowing words from another language that has /ɯ/, what would the first language possibly substitute it with?
Borrowing language phonology -
Consonants:
m n ɲ p b t d c ɟ k g ts dz ʧ ʤ f v s z ʃ ʒ h r~ɾ l j
Vowels:
ɑ aː o oː u uː ɛ eː i iː ø øː y yː