Sound change
process of language change affecting pronunciation or sound system structure
compensatory lengthening
phonetic shift
voicing
vowel shift
metathesis
fronting
sandhi
raising
fusion
vowel breaking
Great Vowel Shift in English
Lachmann's law
affrication
alternation
chain shift
consonant mutation
flapping
Phonological history of English high front vowels
dissimilation
unpacking
lenition