Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

undefeatable

adjective
un·de·feat·able | \ ¦əndə̇¦fētəbəl \

Definition of undefeatable 

: incapable of being defeated or of accepting defeat : unconquerable, invincible

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 undefeatable

un- entry 1 + defeat, verb + -able

Keep scrolling for more

Learn More about undefeatable

Share undefeatable

Resources for undefeatable

Cite Time Traveler Time Traveler! Explore the year a word first appeared

Dictionary Entries near undefeatable

undée

undeeded

undefaced

undefeatable

undefeated

undefendable

undefended

Statistics for undefeatable

Look-up Popularity

Comments on undefeatable

What made you want to look up undefeatable? 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!
Spell It

Can you spell these 10 commonly misspelled words?

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