Definitions:

1. move noisily verb
   • flags flapped in the strong wind
2. move with a flapping motion verb
   • The bird's wings were flapping
3. move with a thrashing motion verb
   • The bird flapped its wings

Synonyms:

• bang
• dither
• flaps
• flutter
• fuss
• pother
• roll

NearBy Words:

• flapcake
• flaperon
• flapjack
• flapper
• flapping
• flaps