"flapped" in the verb sense

1. roll, undulate, flap, wave

move in a wavy pattern or with a rising and falling motion

"The curtains undulated"

"the waves rolled towards the beach"

2. flap

move noisily

"flags flapped in the strong wind"

3. beat, flap

move with a thrashing motion

"The bird flapped its wings"

"The eagle beat its wings and soared high into the sky"

4. beat, flap

move with a flapping motion

"The bird's wings were flapping"

5. dither, flap, pother

make a fuss be agitated

6. flap

pronounce with a flap, of alveolar sounds

Source: WordNet® (An amazing lexical database of English)

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