IPA: /ˈlɪltɪŋnəs/
KK: /ˈlɪltɪŋnəs/
The quality of having a cheerful and rhythmic sound, often associated with a light and lively manner of speaking or singing.
The liltingness of her voice made the song even more enjoyable to listen to.
Liltingness → It is formed from "lilt" (of uncertain origin, possibly from Old English *lyltan*, meaning to sing or chant) and the suffix "-ing" (indicating the action or process) combined with "-ness" (meaning the state or quality of). The word describes the quality or state of having a cheerful, rhythmic, and lively manner of speaking or singing.
Think of the cheerful and rhythmic quality of 'lilt' — that's why 'liltingness' refers to the state of having a lively and musical way of expressing oneself.