A British slang term for beat up / used or tired
Teacher: morning class hope you are feeling fresh
That kid in the class: Nah fuck that I’m proper knackered today miss

Girl 1: omg me and Ron had suck great sex last night my pussy is SO knackered today
Girl 2: You? Knackered? Is Ron alive then?
Girl 1: He didn’t die completely, but he is at home today
by ColgateVagina March 21, 2021
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When you come home after being out all night doing wild stuff with this girl you just met and your brother who’s still up wants you to hang with him and his friends in the computer room, “sorry boys I’m f*cking knackered.”
by McRibbie March 13, 2020
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Being thoughly drunk, nicely high and overall chill
I feel nicely knackered
by ThiccNSnoopy January 11, 2020
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Kick in the knackers, meaning a kick to the testicles of a male. When a boy is kicked in the cock and balls and it hurts like hell, resulting in the boy falling to the ground in pain and rolling around. A kick to balls/knackers is an unfair move.
Jacob and Harry where fighting at school. Harry would have won the fight but Jacob used a kick in the knackers on Harry and Jacob immediately won the fight as Harry couldn’t continue after having his groin attacked so brutally.
by Nutshot pain June 12, 2023
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He docked his boat like a boss, he must be a aqua knacker
by Softnut June 23, 2015
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Term for when you are mentally, emotionally and physically drained.
It’s knackerating starting a new school.
by Zaphod89 September 13, 2020
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