really must go

I really must go

I truly have to depart. Used especially when one's intention to leave has already been stated. Thank you for the drink, but I really must go now. I'd love to stay longer, but I really must go now.
See also: go, must, really
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

(I) really must go.

an expression announcing or repeating one's intention to depart. Bob: It's getting late. I really must go. Jane: Good night, then. See you tomorrow. Sally: I really must go. John: Do you really have to? It's early yet.
See also: go, must, really
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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