Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

air up

transitive verb

Definition of air up 

informal

: to inflate or fill (something) with air We aired up the tires, gassed up the tanks, and drove on out of Monroe at noon. —John Dufresne, Requiem, Mass., 2008

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!

First Known Use of air up

1940, in the meaning defined above

Keep scrolling for more

Learn More about air up

Dictionary Entries near air up

air trap

air trumpet

air twist

air up

air vehicle

air vice-marshal

airview

Statistics for air up

Look-up Popularity

Time Traveler for air up

The first known use of air up was in 1940

See more words from the same year

Comments on air up

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

Show Comments  Hide Comments 

WORD OF THE DAY

secrete

to deposit or conceal in a hiding place

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
SCRABBLE® Sprint

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