informal if two or more people hit it off, they like each other and become friendly immediately
Lynn and Elaine hit it off at once.
sometimes + with
I didn't really hit it off with his friends.
phrasehit off hit it offinformal if two or more people hit it off, they like each other as soon as they meet each other and become friends very easily: Frank took me out to dinner and we really hit it off straight away.+ withI didn't hit it off with the office manager.■ SIMILAR TO: get on well especially BrE
hit something off
to begin something; to launch an event. She hit off the fair with a speech.The mayor hit the fair off by giving a brief address.