How is “sound out” used?

In Venom: Let There Be Carnage (2021), one line is: “You sound out of breath.”

Which movie is “sound out” from?

The clip at the top of this page is from Venom: Let There Be Carnage (2021).

You sound out of breath.

6 作品で登場 · 1 本目

句動詞

to try to find out from sb what they think about sth, often in an indirect way

6 本の映画に登場

sound sb out (about / on sth)
to try to find out from sb what they think about sth, often in an indirect way
I wanted to sound him out about a job.

定義：Oxford Advanced Learner's Dictionary 第 9 版