| noun | a shape that spreads outward “the skirt had a wide flare” |
| noun | a sudden burst of flame |
| noun | a burst of light used to communicate or illuminate |
| noun | reddening of the skin spreading outward from a focus of infection or irritation |
| noun | a sudden recurrence or worsening of symptoms “a colitis flare” |
| noun | a sudden eruption of intense high-energy radiation from the sun's surface; associated with sunspots and radio interference |
| noun | am unwanted reflection in an optical system (or the fogging of an image that is caused by such a reflection) |
| noun | a sudden outburst of emotion “she felt a flare of delight” |
| noun | a device that produces a bright light for warning or illumination or identification |
| noun | a short forward pass to a back who is running toward the sidelines “he threw a flare to the fullback who was tackled for a loss” |
| noun | (baseball) a fly ball hit a short distance into the outfield |
| verb | burn brightly “Every star seemed to flare with new intensity” |
| verb | become flared and widen, usually at one end “The bellbottom pants flare out” |
| verb | shine with a sudden light “The night sky flared with the massive bombardment” |
| verb | erupt or intensify suddenly “Unrest erupted in the country” |
| flare | verb | become flared and widen, usually at one end |
| flare | noun | a sudden burst of flame |
| eruption | noun | a sudden violent spontaneous occurrence (usually of some undesirable condition) |
| irruption | noun | a sudden violent spontaneous occurrence (usually of some undesirable condition) |
| flare-up | noun | a sudden intense happening |