IPA: /ˈɑːrdənsi/
KK: /ˈɑrdənsi/
A strong feeling of enthusiasm or passion for something.
Her ardency for music was evident in her performances.
Ardency is derived from "ardens" (from Latin, meaning burning) and the suffix "-cy" (indicating a state or condition). The word describes the state of being burning or passionate, often in a figurative sense of intense emotion or enthusiasm.
Think of 'burning' ('ardens') to remember that 'ardency' refers to a state of intense passion or enthusiasm.