IPA: /ˈfɜː.vɪd.nəs/
KK: /ˈfɜrvɪdnəs/
The quality of being intensely passionate or enthusiastic about something.
Her fervidness for the project inspired everyone on the team.
Fervidness → It is formed from "fervid" (from Latin "fervidus", meaning boiling or hot) and the suffix "-ness" (meaning the state or quality of). The word "fervidness" refers to the quality of being intensely hot or passionate.
Think of 'fervid' meaning intensely hot or passionate, and remember that 'fervidness' describes the state of being full of that intensity.