Definition of least
(Entry 1 of 3)
superlative of little entry 1
1
: lowest in importance or position
It's least on my list of worries.
2a
: smallest in size or degree
The least noise would startle her.
b
: being a member of a kind distinguished by diminutive size
the least bittern
c
: smallest possible : slightest
believed that the least government was the best government— Irving Stone
least
nounDefinition of least (Entry 2 of 3)
: one that is least
at least
1
: at the minimum
at least once a week
2
: in any case
at least you have a choice
least
adverbDefinition of least (Entry 3 of 3)
superlative of little entry 2
: in the smallest or lowest degree
least of all
: especially not
no one, least of all the children, paid attention
Test Your Vocabulary
Name That Food
-
- Name these cookies!

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
Share least
Time Traveler for least
The first known use of least was before the 12th century
See more words from the same century