A loud exclamation intended to scare someone, especially a child. Usually used when one has been hidden from the victim and then suddenly appeared unexpectedly
a name given to a recluse, or someone strange and antisocial, as in Boo Radley from To Kill A Mockingbird: "Watch out for Boo; he might be a serial killer"
A word used by someone who is inherently scary, such as a ghost or a vampire, to make a weaker person who is scared stiff flee. Usually used quietly, as with definition 2
a cry or noise made to express displeasure or contempt show displeasure, as after a performance or speech
You say `Boo!' loudly and suddenly when you want to surprise someone who does not know that you are there. see also peekaboo. to shout 'boo' to show that you do not like a person, performance, idea etc
Base of Operations I use this term instead of the more common Home Page to be different
If you boo a speaker or performer, you shout `boo' or make other loud sounds to indicate that you do not like them, their opinions, or their performance. People were booing and throwing things at them Demonstrators booed and jeered him He was booed off the stage. Boo is also a noun. She was greeted with boos and hisses. + booing boo·ing The fans are entitled to their opinion but booing doesn't help anyone