godan verb (-ru), intransitive verb
tremble violently; shudder; shake with fear or cold
Describes intense, often involuntary trembling due to fear, shock, or extreme cold. The verb emphasizes a strong physical reaction.
彼は恐怖で震え上がった。
He trembled violently with fear.
寒さで全身が震え上がる。
My whole body shudders from the cold.