ETYM Old Eng. blase, AS. blaese, blase; akin to Old High Germ. blass whitish, German blass pale, Mid. High Germ. blas torch, Icel. blys torch; perh. from the same root as Eng. blast. Related to Blast, Blush, Blink.
1. A light-colored marking.
2. A strong flame that burns brightly; SYN. blazing.

Fervor.

ETYM Written also fervour.
(Alternate spelling: fervour).
1. Heat; excessive warmth.
2. Intensity of feeling or expression; glowing ardor; passion; holy zeal; earnestness.

Alternate (chiefly British) spelling for fervor.

ETYM French, from Latin passio, from pati, passus, to suffer. Related to Patient.
1. A feeling of strong sexual desire.
2. Strong feeling or emotion; SYN. passionateness.