flare
UK: fleə | US: fler
n. a sudden burst of bright light or flame
n. a device producing a bright light, used as a signal or for illumination
vi. to burn or shine with a sudden intensity
vi. (of a situation or emotion) to suddenly become worse or more intense
The word "flare" originates from the late 16th century, derived from the Old English flǣre (a flame or blaze) and the Middle Dutch vlederen (to flicker). The root fl- is associated with burning or blazing, seen in related words like "flame" and "flash." The suffix -are is a verb-forming element, giving the word its dynamic sense of sudden, bright combustion. Over time, "flare" expanded metaphorically to describe sudden intensifications in non-physical contexts (e.g., tempers or conflicts "flaring up").
The match produced a bright flare in the darkness.
Rescue teams launched a flare to signal their location.
The fire began to flare as the wind picked up.
Tensions between the two countries flared unexpectedly.
Her temper flared when she heard the unfair criticism.