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What do you call people who think they're always right?

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5 Answers 5

If you wish to imply that they always think they are right, yet are not always right...

  • know-it-all
  • smarty-pants
  • smart alec

If you wish to imply that they always think they are right, and are indeed always right:

  • genius
  • polymath
  • Einstein
  • sage
  • guru
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While a genius, polymath etc. may always be right, I don't think that they always think they are right. A characteristic of intelligent people is that they are always aware that they may be wrong. –  David S. May 26 at 13:14
    
You can also use "Mr.,"Miss", etc. before some of these, like Miss smarty-pants or Mr. know-it-all. –  user3169 May 26 at 16:20

There could be many including tobyink's options. However, the closest after know-it-all (or know-all) I can think of it is...

opinionated - someone who is opinionated has very strong opinions that they refuse to change even when they are clearly unreasonable.

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Someone who thinks they are always right but are, in fact, not right is often described as being cocksure.

Completely confident in their own ability or knowledge but with no justification.

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Though originally this probably referred to a confident, strutting rooster, it's likely to have an "adult" or inappropriate connotation these days & I wouldn't recommend its use. –  mc01 Aug 18 at 21:02

3rd vote for "know-it-all" as an all-purpose term that can be used somewhat politely.

In addition to answers above, "smart ass" and "wise ass" are more vulgar, but quite common.

The more polite alternatives are "smart-aleck" and (the rather outdated) "wise-acre" (or "wiseguy" which can also be slang for a joker or a mafia member ... depends on context).

A "pedant" is someone who makes a point of correcting others and showing off how much they know.

Also, whatever my wife & coworkers decide to call me that day... ;)

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I think you're talking about a Narcissist

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3  
Why? –  choster Aug 18 at 14:49

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