flaring fla·ring US/ˈflɛrɪŋ/ rare adjective 1. having a gradual increase in width “flared nostrils” “a skirt flaring from the waist” Synonymsflared Similarincreasing 2. streaming or flapping or spreading wide as if in a current of air “ran quickly, her flaring coat behind her” “flying banners” “flags waving in the breeze” Synonymsaflareflyingwaving Similarmoving WordNet 2.1 (Princeton University). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved.