the.com/ardor

Passion with a fever attached — too hot to be mistaken for mere enthusiasm.

means Intense warmth of feeling — burning enthusiasm, passion, or zeal that drives you rather than politely accompanies you.

from From Latin 'ardor' (a burning, flame, heat), from the verb 'ardere' meaning 'to burn.' The same root gives us 'arson' and 'ardent' — so when you say someone pursues a goal with ardor, you're saying, quite literally, that they're on fire for it.

etymology
from Latin ardere, to burn
sibling word
arson shares the same scorching root
usage note
describes intensity, not duration — ardor fades fast
common pairing
often modified by youthful, as if age cools it
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