振りをする

pretend to; act as if

→ 振り
phrase Rare #38,063
pretend to; act as if Used to act as though something is true. The noun or phrase before 振りをする describes what someone pretends to be or do. For example, 大人の振りをする means “pretend to be an adult.”
JA: 彼は上司がそばにいる時は熱心な振りをする。
EN: He pretends to be diligent when his boss is nearby.

母の振りをすることは難しくなかった

It wasn't difficult to pretend to be my mother.

その司祭は人前で真面目な振りをする

That priest pretends to be serious in public.

彼は上司そばに居る時は熱心な振りをする

He pretends to be diligent when his boss is around.

彼はここではよそ者振りをする

He pretends to be an outsider here.