How to say "flop" in Japanese

• 大コケおおコケ
  noun, suru verb, intransitive verbA colloquial noun for a total failure, especially a movie that bombs at the box office. Use it when talking about a film that flopped.
• 倒れこむたおれこむ
  godan verb, intransitive verbThe physical verb: to collapse, or to flop down onto something, as when an exhausted person flops onto a bed. It is seldom the word you want for the failure sense of flop.
  家いえに着つくやいなや、彼かれは床ゆかに倒れ込たおれこんだ。↗

  On arriving home, he laid himself on the floor.
• ポシャる
  godan verb, intransitive verbA colloquial verb for a plan or project that falls through or fails. Use it when a scheme or arrangement collapses and comes to nothing.
  住宅じゅうたく計画けいかくはぽしゃってしまった。↗

  The housing project has fallen flat.
• 失敗作しっぱいさく
  nounA noun for an unsuccessful work — a flop, dud, or bomb. Use it when you want to label the work itself as a failure rather than describe an act of failing.
• こける
  ichidan verb, intransitive verbA less common verb meaning to be a flop, used for example of a play that fails. It is usually written in kana alone.

For a work that flopped use the nouns 「大コケ」 or 失敗作, for a play flopping use the verb 「こける」, for a plan falling through use 「ポシャる」, and for flopping down physically use 「倒れこむ」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 大コケおおコケflop (e.g. movie)
• 倒れこむたおれこむto collapse
• ポシャるto fall through (of a plan, project, etc.)
• 失敗作しっぱいさくfailure (i.e. an unsuccessful work)
• こけるto flop (e.g. of a play)
• 出来損ないできそこないgood-for-nothing