Last Updated：2025/12/02

(idiomatic) Without doubt. / Used other than figuratively or idiomatically: see for, a, fact.

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for a fact

Source Word

for a fact

idiomatic not-comparable

(idiomatic) Without doubt. / Used other than figuratively or idiomatically: see for, a, fact.

Japanese Meaning

確実に / 事実として / 疑いなく

I know for a fact that she finished the report last night.

私は彼女が昨夜レポートを終えたことを間違いなく知っている。

Sense（1）

(idiomatic) Without doubt.

I know this for a fact.

Sense（2）

Used other than figuratively or idiomatically: see for, a, fact.

The doctor had asked for a fact that I could not remember.