Meaning of Boo: A term of endearment often used between romantic partners or close friends.
Literal Meaning of Boo: Literally, it is an affectionate term.
Popularity: High.
Origin: English.
Example:
Oliver: “Hey, Boo! How’s your day going?”
Sophia: “Not bad, Boo. Just busy at work.”
Related Nicknames: Boo Boo, Boo Boo Kitty, Sweetie, Darling, Love.