妄想

delusion, fantasy

m o̞ː s o̞ː
noun Uncommon #19,995
delusion, fantasy Often refers to an imagined or unrealistic belief; it can also mean a daydream or fanciful imagining.
JA: それは私の妄想かもしれない。
EN: That might just be my imagination.

仕事は失敗ばかりでも妄想じゃ信じられない…

Even if work is nothing but failure, I can’t believe it was all just in my head…

— Good Luck, Have Fun, Don't Die (2026)

妄想です。

It's just my imagination.

君は僕の妄想だ

You're a figment of my imagination.

— ファイト・クラブ (1999)

お前が俺の妄想さ!

You're just a figment of my imagination!

— ファイト・クラブ (1999)

何かの妄想なの?

Is this some kind of delusion?

— Good Luck, Have Fun, Don't Die (2026)

ただの偶然かもしれないけどヘンリーは“妄想だ”って君も私も芸術家だ

It might just be a coincidence, but Henry says, “It’s all in your imagination.” You and I are both artists.

— パディントン2 (2017)

だから彼の妄想の原因は―心の病とされた

Therefore, the cause of his delusions was attributed to mental illness.

— 嵐の中で (2018)

いや…全部俺の…妄想?

No... was it all just my imagination?

— 君の名は。 (2016)

あの少女は自分が王女様だという妄想にとらわれている。

That girl is under the delusion that she’s a princess.

君は完全な妄想状態にあるんです。

You're completely delusional.

Sounds similar to