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not (in) the least

idiom

Definition of not (in) the least

: not at all : not in any way or respect

It did not interest me in the least.

That joke was not in the least funny.

I'm not the least worried.

Word by Word Definitions

least play

: superlative of little:1
: lowest in importance or position
: smallest in size or degree

: one that is least

: superlative of little:2
: in the smallest or lowest degree

See the full definition of least

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