idiomatic

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

card 1 of 6 · context meaning

What does 'idiomatic norms' refer to in this sentence?

In English, the position of pronouns with phrasal verbs is determined by idiomatic norms, not arbitrary rules.