godan verb (-su)
begin to tremble; start shaking
Describes the onset of trembling, often from cold, fear, or excitement.
寒さで体が震え出した。
My body began to tremble from the cold.
緊張のあまり、手が震え出す。
My hands start shaking from nervousness.
Standard kanji spelling.
Variant with だす in kana; both forms are used.
震える means 'to tremble' as a state, while 震え出す focuses on the beginning of that action.
Compound of 震える (furueru, 'to tremble') + 出す (dasu, 'to start doing').