Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

rest up

intransitive verb

Definition of rest up 

: to get a complete rest : rest oneself thoroughly

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 rest up

rest entry 2

Keep scrolling for more

Learn More about rest up

Dictionary Entries near rest up

rest stop

restudy

restuff

rest up

restward

rest with

resty

Statistics for rest up

Look-up Popularity

Comments on rest up

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

Show Comments  Hide Comments 

WORD OF THE DAY

vitiate

to make faulty or ineffective

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Dictionary Devil

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