1. [ adjective ] streaming or flapping or spreading wide as if in a current of air
Synonyms: waving aflare flying flaring

"ran quickly, her flaring coat behind her" "a fluttering scarf" "flying banners" "flags waving in the breeze"

Related terms: moving
2. [ adjective ] moving rapidly and lightly to and fro as of or with wings
Synonyms: flittering

"fluttering birds" "the flittering wings of a fledgling"

Related terms: moving
3. [ adjective ] having a slight and rapid trembling motion
Synonyms: palpitating palpitant

"a fluttering heartbeat" "palpitant movements rather than violent eruptions" "my palpitating heart"

Related terms: unsteady
4. [ noun ] (physics) the motion made by flapping up and down
Synonyms: flapping flopping flutter flap
Related terms: wave undulate flicker flap beat
Similar spelling:   flittering