How is “as a matter of fact” used?

In Lifeboat (1944), one line is: “As a matter of fact, it's a violation of international law.”

Which movie is “as a matter of fact” from?

The clip at the top of this page is from Lifeboat (1944).

as a matter of fact

used to answer a question or confirm a point with an emphatic yes, stressing that it really is so; used to add a comment on sth that you have just said, usually adding sth that you think the other person will be interested in; used to disagree with sth that sb has just said

Heard in 88 moviesPlay Idioms

Meaning

Editorial35% of films
used to answer a question or confirm a point with an emphatic yes, stressing that it really is so
Yes, as a matter of fact.
Oxford35% of films
used to add a comment on sth that you have just said, usually adding sth that you think the other person will be interested in
Oxford30% of films
used to disagree with sth that sb has just said

In the movies · 88

Learn it in full scenes

Signed, Sealed, Delivered: The Vows We Have Made2021

More idioms

Definitions from the Oxford Advanced Learner's Dictionary, 9th edition

As a matter of fact, it's a violation of international law.

Lifeboat (1944)91:00

Said in 8 films · #1