Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

unbrother

transitive verb
un·brother | \ ¦ən+ \

Definition of unbrother 

: to deprive of the status of brother

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

History and Etymology for unbrother

un- entry 2 + brother

Keep scrolling for more

Learn More about unbrother

Dictionary Entries near unbrother

unbroke

unbroken

unbrookable

unbrother

unbrotherly

unbruised

unbrushed

Statistics for unbrother

Look-up Popularity

Comments on unbrother

What made you want to look up unbrother? Please tell us where you read or heard it (including the quote, if possible).

Show Comments  Hide Comments 

WORD OF THE DAY

biannual

occurring twice a year or every two years

Get Word of the Day daily email!

Test Your Vocabulary

Name that Food Quiz

  • alt-573b465788319
  • Name these cookies!
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Add Diction

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Words at Play

Ask the Editors

Word Games