For me it would be entitlement. That would definitely be a deal breaker in relationships.
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1) People who constantly have to voice their opinion about everything, like they're important in some way ·
2) Irony ·
3) Lists
The inability to take responsibility or apologize for your actions. People make mistakes, but if you can’t own up to them or apologize I have no time for you.
Someone who thinks they know everything about everything!! Just STFU, we all know you are not the smartest person in the world, calm down