; burning; redhot; hence, figuratively, causing a sensation of burning: as, an ardent fever.Inflammable; combustible: only in the phrase ardent spirits (which see, below).Having the appearance or quality of fire; flashing; fierce.Having glowing or fiery passions or affections: as applied to the emotions themselves, showing vehemence; passionate; affectionate; zealous: as, ardent love or vows; ardent zeal.Nautical, having a tendency to gripe or come quickly to the wind: said of certain ships.