野次馬

onlooker, spectator

j a̠ ʑ i ɯ̟ m a̠
noun Rare #38,290
onlooker, spectator Often refers to a curious bystander who gathers around to watch an incident, sometimes with a slightly negative nuance.
JA: 事故現場には野次馬が大勢集まっていた。
EN: A large crowd of onlookers had gathered at the accident scene.

現場に野次馬集まった

Onlookers gathered at the scene.

君は野次馬だろ

You’re just a rubbernecker, aren’t you?

— ファイト・クラブ (1999)

喧嘩を見よう野次馬集まった

A crowd gathered to watch the fight.

信者が多いそれ以外は野次馬

There are many believers, but everyone else is just a bystander.

— 甘い生活 (1960)