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Phrase(s): Say hello to someone (for me).
Please convey my good wishes to someone. (The someone can be a person’s name or a pronoun. See also Give my best to someone.; Remember me to someone.) • Andy: Good-bye, Tom. Say hello to your brother for me. Tom: Sure. Bye, Andy. • Sally: Well, good-bye. Mary: Bye. Sally: And say hello to Jane. Mary: Sure. Bye-bye.
McGrawhill's American Idioms And Phrasal Verbs