ばっとばっとMeanings1adverbsuddenly; in a flash; rapidlyonomatopoeic or mimetic wordMimetic adverb describing a quick, sudden action or movement, often with a sense of alertness or nimbleness.彼かれはばっと立たち上あがった。He suddenly sprang to his feet.猫ねこがばっと飛とびかかった。The cat pounced in a flash.