adverb, adverb taking the 'to' particle, noun or participle which takes 'suru'
opening and closing mouth repeatedly; gasping
Describes the motion of the mouth opening and closing, like a fish out of water or someone struggling to speak. Also used for gasping for air.
金魚が水面で口をぱくぱくさせている。
The goldfish is opening and closing its mouth at the water's surface.
彼は驚いてぱくぱくしていた。
He was gasping in surprise.
adverb, noun or participle which takes 'suru'
flapping; gaping open and shut
Used for things like a loose shoe sole flapping, or a door or lid repeatedly opening and closing loosely.
靴の底がぱくぱくして歩きにくい。
The sole of my shoe is flapping and it's hard to walk.
adverb, adverb taking the 'to' particle, noun or participle which takes 'suru'
eating heartily; gobbling; munching
Describes eating quickly and with gusto, often with the mouth opening wide. Common in casual descriptions of eating.
子供たちはお菓子をぱくぱく食べた。
The kids gobbled up the snacks.
彼は大きなハンバーガーをぱくぱくと平らげた。
He devoured the big burger in no time.