adverb, noun or participle which takes 'suru'
crisp; neat; stiff; tense; smartly
Describes a crisp, neat, or stiff appearance, manner, or feeling. Often used in the form きりっとした to modify nouns. Can refer to clothing, posture, facial expressions, or a tense atmosphere.
See also: きりり
He is wearing a crisp, smart suit.
彼女はきりっとした表情で会議に臨んだ。
She faced the meeting with a tense, determined expression.