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half-brother

Male person who, in relation to the other, has a one parent in common and a different one parent.
half-brother by Usery May 3, 2021

half-brother

Male that has one parent in common with another living being.
half-brother by Sonyc September 22, 2023

half-brother

Male that has one parent in common with other living beings.
half-brother by Coldandhot October 14, 2023

half-brother

Male that has one parent in common with another living being.
half-brother by Simaduria July 26, 2024

Half brother 

A younger brother who is half your blood, from either your mothers, or fathers side, but sometimes their a little pain but they are our fucking sibling of course
Half brother: HALF SIBLINGGG IM BORED
Older sibling or younger: later!!!!
Half brother by Justafucktard November 19, 2020

half-brother-in-law

Spouse's half-brother or half-sister's husband.
My half-brother-in-law is a good person.
half-brother-in-law by Rwopazaq November 24, 2019
More from Urban Dictionary
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026
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