off-duty
adjective uk/ˌɒfˈdʒuː.ti/ us/ˌɑːfˈduː.t̬i/
B2 （警察、医生、哨兵等）不当班的，下了班的
When police officers, doctors, guards, etc. are off-duty, they are not working.
He looks completely different when he's off-duty and in his normal clothes. 他下了班穿上自己平日的衣服后完全变了个样。