1.Verb: An act of maliciousness or resentment. Not always by an entity, commonly used to describe life.

2. Noun: To be of or pertaining to a cold or unfriendly nature.

3. Adjective: Describes an unlikable or rude character, object or idea.
1. Are you trying to boos me right now, man? or

I've been gettin boosed all day today. Life is trying to get at me with it's boosness.

2. That guy is such a boos.

3. Damn, that is a boos sandwich. What is on that??
by Journeyman1991 August 18, 2011

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A word that pisses me off very much. These days is an african-american term of affection like 'shorty'.
"Even when I'm with my boo, all I think about is you" Nelly ft Kelly Rowland - Dilemma.
by Caz November 06, 2004

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Sound that a fake ghost would make
Ghost:BOOOO!
Child:AHHHHHHH!
by BEYONCE November 08, 2003

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Never ever gonna get butt love. Not even if there's a fire.
You: Hey how bout some bf later?

Me: booooo

Never gonna have it.
by Beefy one September 28, 2013

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the incorrect spelling for the word Beau. most commonly used by people who have heard the word but do not know how to spell it. beau meaning: boyfriend or girlfriend. boo meaning: what a ghost says.
went out with my beau last night.
the ghost screamed boo
by chitownpaul October 12, 2011

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marijuana, weed, dope
Boo is a term believed to have originated, or at least to have been popularized by, African-American jazz and pop musicians during World War II.
We smoked some boo. Song lyric from the 50's: "I sumokum booleyeaa, I smokum boo."
by Gunnter March 16, 2008

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a word you yell at someone who keeps staring at you.
Boo!!What are you looking ugly.
by Drucilla Coleman June 20, 2007

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