語 yǚ MC njwo (上聲) LH ŋɨɑ (上聲) OCM *ŋaʔ
語 yǜ MC njwo (去聲) LH ŋɨɑ (去聲) OCM *ŋah
言 yán MC njɐn (平聲) LH ŋiɑn (平聲) OCM *ŋan
'To speak, speech, talk'
Who would have known they once differed only in the final consonant?
(Information from the ABC Etymological Dictionary of Old Chinese)