話をでっち上げた

made up a story

→ 話
phrase Rare #36,620
made up a story Means fabricated or invented a story, often implying that it was false or misleading. The base form is 話をでっち上げる.
JA: 彼は自分をよく見せるために、話をでっち上げた。
EN: He made up a story to make himself look good.

ぼくはきっとジムその話をでっち上げたのだと思う

I think Jim must have made up that story.

彼は話をでっち上げた

He made the whole story up.

っていう話をでっち上げたんだ

I made up that story.

— 罪人たち (2025)

被告人は法廷で事実と違う話をでっち上げた

The defendant fabricated a false story in court.