to make a big thing (out) of something
[make] a big (thing|deal) about {sth}to make a big thing (out) of something
01
to treat or portray something as more important, significant, or serious than it actually is, often resulting in exaggerated attention or drama
Exempel
Do n’t make a big deal out of it; it ’s just a minor mistake.
He made a big deal of his promotion, even though it was n’t unexpected.
