ビシッと
Meanings
Adverb
1. with a snap; (break) cleanly (Onomatopoeia)
2. (reject) sternly; flatly
3. smartly (e.g. of dressing up well)
Other readings
Examples2
今日
What are you doing dressed so well? Do you have a date or something?
ビシッと
Straighten up.