Warmth

hotness, warmth, warmness, calefaction, calidity, torridity, high temperature, hot wind, heat wave, fever, hot weather, temperature, incandescence, tepidity, incalescence, sultriness, red heat, white heat, torridness, tropical heat, dog days*; see also warmth, weather.

Antonyms cold*, frost*, frigidity. *

Fervor

ardor, passion, excitement; see desire 2, enthusiasm 1.

Anger

agitation, fury, ferocity; see anger, rage 2.

A section of a race

run, course, trial, qualifier; see race 3.

Sources of heat

flame, fire, radiation, radioactivity, atomic energy, solar energy; see also energy 3, fire 1.

To make hot

cook, warm, fire, heat up, burn, enflame, inflame, kindle, enkindle, calcine, calefy, tepefy, subject to heat, put on the fire, make hot, make warm, calorify, smelt, scald, flush, carbonize, thaw, mull, boil, char, superheat, roast, chafe, seethe, oxidate, toast, oxidize, set fire to, melt, cauterize, sun, reheat, steam, incinerate, sear, singe, scorch, fuse, raise the temperature of, liquefy, gasify, fry, frizzle, use a blowtorch on, turn on the heat; see also burn 2, cook, ignite.

Antonyms cool*, freeze*, reduce the temperature.

To become hot

glow, warm up, rise in temperature, become fevered, become feverish, grow hot, incandesce, blaze, flame, flush, seethe, burst into flame, kindle, ignite, liquefy, gasify, thaw, swelter, perspire, reek, begin to pant, record a higher temperature, reach a higher thermal register; see also boil 1, burn 1, sweat 1.