Definition of vast
(Entry 1 of 2)
: very great in size, amount, degree, intensity, or especially in extent or range
vast knowledge a vast expanse
vast
nounDefinition of vast (Entry 2 of 2)
: a boundless space
the vast of heaven— John Milton
Test Your Vocabulary
The Great British Vocabulary Quiz
-
- Named after Sir Robert Peel, what are British police called?

Test your visual vocabulary with our 10-question challenge!
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share vast
Time Traveler for vast
The first known use of vast was in 1585
See more words from the same year