one-up

verb
\ ˌwən-ˈəp How to pronounce one-up (audio) , ˈwən- \
one-upped; one-upping; one-ups

Definition of one-up

 (Entry 1 of 2)

transitive verb

: to practice one-upmanship on

one up

adjective

Definition of one up (Entry 2 of 2)

: being in a position of advantage usually used with on

First Known Use of one-up

Verb

1963, in the meaning defined above

Adjective

1919, in the meaning defined above

History and Etymology for one-up

Verb

back-formation from one-upmanship

Learn More About one-up

Dictionary Entries Near one-up

one-two

one-up

one up

See More Nearby Entries 

Statistics for one-up

Cite this Entry

“One-up.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/one-up. Accessed 24 Jun. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More from Merriam-Webster on one-up

Thesaurus: All synonyms and antonyms for one-up

WORD OF THE DAY

Test Your Vocabulary

Name That Food

  • a-light
  • Name these cookies!
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

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!