すく
sukumu

Godan Verb (mu)

1. to freeze (from fear, etc.); to be unable to move (e.g. from surprise); to be paralyzed (with horror, etc.)

Intransitive
Usually Written in Kana
ヘビを あしがすくんでしまった。
hebio mite ashiga sukunde shimatta.
I froze at the sight of the snake.
Godan Verb (mu)

2. to cower; to shrink in on oneself

Intransitive
Usually Written in Kana