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hit it off
To form an immediate, positive connection (with someone). I just knew you and Haley would hit it off—you two have so much in common. I'm so glad that you hit it off with my father. He isn't always the easiest person to get to know.
1. To strike or knock into something, especially accidentally. A: "Are you OK?" B: "Yeah, I'll be fine. My elbow just hit off the table."
2. To cause something to fall or fly off (of something) as a result of striking it. A noun or pronoun can be used between "hit" and "off." The dog's wagging tail hit off a vase that was on the edge of the table. He said he could hit the baseball off the top of my head.
3. To force someone's Internet connection to fail as a result of a denial-of-service (DOS) attack, especially during online multiplayer video games. ("Off" in this instance is short for "offline.") A noun or pronoun can be used between "hit" and "off." There's this really irritating player on Call of Duty who hits me off whenever I start to win. He bragged about how long he could hit off his opponents, until he got slapped with an $800 fine and a five-year ban from Xbox Live.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
hit it off (with someone)
Fig. to quickly become good friends with someone. Look how John hit it off with Mary. Yes, they really hit it off.
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.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
hit it off
Get along well together, as in I was so glad that our parents hit it off. In the 17th century this phrase was put simply as hit it, the adverb off being added only in the mid-1800s.
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
hit it offSPOKEN
COMMON If two people hit it off when they first meet, they like each other and get on well together. Bill and Andrea seemed to hit it off last night. I had to leave — I didn't really hit it off with the new manager.
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012
hit it ˈoff (with somebody)(informal) quickly form or have a good relationship with somebody: I met a girl at the party, and we hit it off straight away.
Farlex Partner Idioms Dictionary © Farlex 2017
hit it offInformal
To get along well together.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.