Collocations for wane - verb

a little, somewhat
Her popularity was waning somewhat.

considerably
gradually
quickly, rapidly, soon

begin to
Her initial enthusiasm was clearly beginning to wane.

wax and wane (= grow and then decrease)
Public interest in the issue has waxed and waned over the years.

Wane is used with these nouns as the subject:
confidence, enthusiasm, influence, interest, moon, passion, popularity, strength