Editing Chuvash language (section)

=====Exceptions=====

Vowel harmony does not apply for some invariant suffixes such as the plural ending -сем and the 3rd person (possessive or verbal) ending -ӗ, which only have a front version.<ref>Rona-Tas 1997: 3</ref> It also does not occur in loanwords and in a few native Chuvash words (such as анне "mother"). In such words suffixes harmonize with the final vowel; thus Анне'''пе''' "with the mother".

Compound words are considered separate words with respect to vowel harmony: vowels do not have to harmonize between members of the compound (so forms like сӗтел|пукан "furniture" are permissible).