(especially of the face) reddened or suffused with or as if with blood from emotion or exertion; "crimson with fury"; "turned red from exertion"; "with puffy reddened eyes"; "red-faced and violent"; "flushed (or crimson) with embarrassment"
lighted with red light as if with flames; "streets ablaze with lighted Christmas trees"; "the inflamed clouds at sunset"; "reddened faces around the campfire"
If someone reddens or their face reddens, their face turns pink or red, often because they are embarrassed or angry. He was working himself up to a fury, his face reddening. to become red, or to make something red