Definition of back-of-the-envelope
: done quickly to provide a rough estimate : not exact
did a back-of-the-envelope calculation His method is, in effect, a back-of-the-envelope time-and-motion study.— Ian Stewart
Keep scrolling for more
Keep scrolling for more
Test Your Vocabulary
February 2021 Words of the Day Quiz
-
- Which is a synonym of perdure?

Test your knowledge - and maybe learn something along the way.
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Share back-of-the-envelope
Time Traveler for back-of-the-envelope
The first known use of back-of-the-envelope was in 1968
See more words from the same year