震わせる
ふるわせる · furuwaseru · JLPT N1 · noun
shaking
📳 震える (tremble) + せる (make) = to make something tremble
震 is the quake kanji, so this literally means 'make it quake'. The thing shaken takes を: 体を震わせる, to shake one's body.
震 — rain radical 雨 + chen 辰 (phonetic)
A semantic-phonetic compound: 雨 'rain' gives the meaning (weather/sky phenomena), while 辰 supplies the sound. Originally referred to thunder and the shaking it causes, then extended to mean 'shake, quake, tremble' as in earthquakes (地震).