soundchange
nounUK /ˈsaʊnd tʃeɪndʒ/
US /ˈsaʊnd tʃeɪndʒ/
A sound change is when the way people say a word slowly becomes different over time.
The sound change turned the old word into the one we use today.
OTHER MEANINGS
2. A change in the sound of a musical note or recording.
The sound change in the second verse made the song feel happier.
3. A change in how a machine or device sounds, often showing a problem.
The mechanic listened for a sound change in the engine.
4. A change in the noise level of an environment.
We noticed a sound change when the birds started singing at dawn.