The Sound of Rattles and Shivers
ガタガタ (gatagata) is the rough, rattling sound of something loose shaking against something solid — an old train clattering over tracks, a rickety bus bouncing on a dirt road, a loose window pane trembling in the wind. It’s also the word for your body shaking: knees knocking from fear, teeth chattering from cold, a person trembling so hard you can almost hear it.
ガタガタ belongs to the giongo (擬音語) category — onomatopoeia for real, non-vocal sounds. Japanese has five types of onomatopoeia, and giongo captures the sounds made by objects, weather, and physical impacts. When used for trembling bodies, ガタガタ blurs into gitaigo (state-describing) territory, which is common for highly expressive words.
When to Use ガタガタ
Use ガタガタ for anything loosely rattling, shaking, or trembling. Common patterns: 「ガタガタ揺れる」(gatagata yureru, “to shake/rattle”), 「ガタガタ震える」(gatagata furueru, “to tremble”), and 「ガタガタ音がする」(gatagata oto ga suru, “to make a rattling sound”). Importantly, ガタガタ also has a figurative meaning: to “complain noisily” or “fuss” — as in 「ガタガタ言うな!」(gatagata iu na!, “Stop making a fuss!” / “Quit your yapping!”). For gentler shaking, use プルプル (purupuru); for heavy thudding, use ドンドン (dondon).
Fun Fact
Japan sits on one of the most seismically active zones on Earth, so ガタガタ is a word every resident learns very young — it’s the sound of dishes rattling in the cupboard when an earthquake begins, often the first clue before the rolling shake arrives. Japanese earthquake-preparedness guides explicitly teach children to recognize ガタガタ as a signal to drop, cover, and hold on. The word’s dual meaning — objects rattling and humans trembling — captures the experience of a quake more completely than any single English word.
Examples
In Anime
Spirited Away (千と千尋の神隠し)
When Chihiro first rides the strange train across the water, the cars ガタガタ softly along the tracks — the rattling is part of what makes the liminal, otherworldly journey feel real and grounded.
My Hero Academia (僕のヒーローアカデミア)
Midoriya's knees often go ガタガタ with fear before huge battles — the classic "shaking legs" animation, with the word stamped across the panel, sells the stakes before a single punch is thrown.