idiomatic

mastery
UK /ˌɪd.iː.əˈmat.ɪk/ US /ˌɪd.i.əˈmæt.ɪk/adjnoun

card 1 of 6 · context meaning

What does the use of 'idiomatic' emphasize in this sentence?

The phrase 'see the light' has an idiomatic meaning—it refers to gaining understanding or having a revelation, not literally seeing anything.