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Knowa-It-All

A little boy who thinks he knows everything about anything.

Started off of Popular Dem Influencer Knowa De Baraso
Jason, stop being a Knowa-It-All, you have school on Thursday.
by SpillBeans123 February 17, 2025
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know nothing know it all

A person who knows nothing about most topics they chime in on in conversation. This person will be 16 years old with zero experience about farming and tell a farmer about crop rotation. This person will tell a European car technician what's wrong with their car, refuse to pay diagnosis, because they used to work at Chevy in the 80s, and then bitches when the car isn't fixed.

Rather than listening and increasing their knowledge they insist to run their mouth to the point where everybody is annoyed.
Tim actually gave advice to Matt Damon about how to play Jason Bourne better? What a fucking know nothing know it all.
by Maiorani January 1, 2017
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know it all

1. to be extremely knowledgeable or experienced.
2. a person who acts as though he/she knows everything and overwrites (DISMISSES) the ideas, opinions, comments and/or suggestions of others.
by Mr. Terrence L. Trezvant October 5, 2003
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know it all

A person who's quick to interrupt the actions, comments, or approach of others on just about everything they say and do, so as to disapprove in some way and try to correct them with their own views on the topic
"Ann: "I think Jerry needs some tylenol and-"

Pat: "No, No, Ann! When someone feels that way, you need to get them some chicken noodle soup."

Elaine: "Well, I'm going to feed the bird so-"

Pat: "NO, NO, ELAINE! For a bird like this, you only feed it three to four times a day and you want to give it honey."

Ray : "I'm going to run out and get some tools to-"

Pat : "Ray, that's rubbish. To fix a bicycle, you have to use old dirty tools. New tools don't get the job done these day. It's the old fashioned kind that will get the job done."

Janice : "Pat, quit it. You're being an motherfucking know it all. Quit it. QUIT IT!"
by Leo Bos August 11, 2008
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Mr. know it all

Someone who believes they've got the answer to every question even if the question hasn't been asked or if they really don't have the answer (... but of course they believe they do). This is not a shy individual, but rather someone whose ego is over flowing primarily through their mouth, but seems to have come from the other end of their digestive system.
Standing in the door of his single wide, Mr. know it all gave me his latest real estate tips.

Mr. know it all told the CIA there were weapons of mass destruction in Iraq. Unfortunately, they were listening.
by polarpaul July 5, 2005
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Nancy Know-it-all

A person who behaves as if they know everything, specifically in the context of a social atmosphere in attempts to look cool around others.
Jack: I got some champagne for the party!
Derek: Actually Jack, champagne is from one specific region in California, you just technically brought sparkling wine.
Jack: You're being a little Nancy Know-it-all Derek...
by MagicManMatt October 30, 2017
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Know-It-All

Someone who thinks they know everything that is to be known. They argue about things that they have no knowledge about. They either act like they know or they really believe they know what they are talking about on any given subject. They are arrogant and believe they are always right. See arrogant, hard-headed
I know what a know-it-all is because I am one.
by Meen5 September 10, 2011
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