FLAPPING Synonyms: 65 Similar and Opposite Words - Merriam-Webster
https://www.merriam-webster.com/thesaurus/flapping
WebSynonyms for FLAPPING: waving, flailing, twitching, writhing, fiddling, squirming, wriggling, fidgeting; Antonyms of FLAPPING: immobility, inertia, motionlessness, stop, cessation, stillness, termination, expiration
DA: 39 PA: 41 MOZ Rank: 17