flare

intransitive verb 1 a : to burn with an unsteady flame b : to stream in the wind
2 a : to shine with a sudden light <a match flares in the darkness> b (1) : to become suddenly excited or angry —usually used with up (2) : to break out or intensify usually suddenly or violently —often used with up c : to express strong emotion (as anger)
3 : to open or spread outward <the pants flare at the bottom>transitive verb 1 : to display conspicuously <flaring her scarf to attract attention>
2 : to cause to flare <the breeze flares the candle>
3 : to signal with a flare or by flaring
4 : to burn (a jet of waste gas) in the open air