In Chhatthare Limbu, many phonemes undergo allophonic alterations when occurring in different phonetic environments. Similarly, phonological changes of the stem or affix result from the interaction between phonemes in different morphological contexts. A monosyllabic stem final consonant syllabifies with a vocalic suffix, causing a verb stem alternate between consonantal and vocalic suffixes. Various types of affixal strings show different phonological processes such as deletion, epenthesis and assimilation which contribute to allophonic and morphophonological changes.