hit it off

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hit it off (third-person singular simple present hits it off, present participle hitting it off, simple past and past participle hit it off)

1. (informal) To develop an amicable relationship (with), especially in a sudden manner during an initial encounter.

   I really hit it off with Jack, and hired him without needing an interview.

   Those two are really hitting it off. I wouldn't be surprised if they started dating soon.

   • 2023 February 6, Lizzie Cernik, “How we met: ‘He sent 40 Valentine’s cards with all the different things he loved about me’”, in The Guardian‎, →ISSN:

     “My profile said ‘Australian tennis player’ so I think Savannah had visions of me at Wimbledon,” he laughs. “In reality, I was paying for the opportunity to play at an academy.” Even so, they soon hit it off.

• hit it up
• make friends with
• befriend

• get along
• get on like a house on fire