逆さか立だつ

godan verb (-tsu), intransitive verb

stand on end; bristle; ruffle

Describes hair, fur, or feathers standing up, often from fear, cold, or excitement.

• 怖こわくて髪かみの毛けが逆さか立だった。

  My hair stood on end from fear.

• 寒さむさで鳥とりの羽はねが逆さか立だっている。

  The bird's feathers are ruffled from the cold.