How is “set against” used?

In Persuasion (2007), one line is: “Your brother seems dead set against the whole idea of Kellynch.”

Which movie is “set against” from?

The clip at the top of this page is from Persuasion (2007).

Your brother seems dead set against the whole idea of Kellynch.

5 作品で登場 · 1 本目

句動詞

to make sb oppose a friend, relative, etc.; to judge sth by comparing good or positive qualities with bad or negative ones

5 本の映画に登場

1
set sb against sb
to make sb oppose a friend, relative, etc.
She accused her husband of setting the children against her.
2
set sth (off) against sth
to judge sth by comparing good or positive qualities with bad or negative ones
Set against the benefits of the new technology, there is also a strong possibility that jobs will be lost.
3
set sth (off) against sth
to record sth as a business cost as a way of reducing the amount of tax you must pay
to set capital costs off against tax

定義：Oxford Advanced Learner's Dictionary 第 9 版