adverb, noun or participle which takes 'suru'
flaring up; burning hotly; suddenly bright
Describes something suddenly becoming bright, hot, or intense, like a flame flaring up or the sun blazing.
ストーブがカッと燃え上がった。
The stove flared up with a sudden blaze.
真夏の太
The midsummer sun beats down intensely.
adverb, noun or participle which takes 'suru'
flying into a rage; losing one's cool
Used for a sudden, explosive burst of anger; often with なる or する.
彼はその言葉にカッとなって怒鳴った。
He flew into a rage at those words and yelled.
adverb, noun or participle which takes 'suru'
opening suddenly and widely (eyes, mouth)
Describes eyes or mouth opening wide in surprise, shock, or intensity; often with 見開く or 開く.
驚いて目をカッと見開いた。
I opened my eyes wide in surprise.
adverb, noun or participle which takes 'suru'
acting resolutely
Archaic use for acting with sudden determination or firmness; rarely encountered in modern Japanese.
古い文献では「カッと決断する」のように使われることがある。
In old texts, it is sometimes used like 'to decide resolutely'.