1. (informal) immediately develop a good friendly relationship (with someone)

Derived forms: hitting it off, hit it off

• horrendously
• horrent
• horrible
• horribleness
• horribly
• horrid
• horridly
• horridness
• horrific
• horrifically
• horrified
• horrify
• horrifying
• horrifyingly
• horripilate
• horripilation
• horror
• horror film
• horror movie
• horror-stricken
• horror-struck
• hors d'oeuvre
• hors de combat
• horse
• horse around