in the least

least  (lst)

adj. A superlative of little.

1. Lowest in importance or rank.

2.

a. Smallest in magnitude or degree.

b. Slightest or tiniest: didn't care the least bit.

adv. Superlative of little.

To or in the lowest or smallest degree.

n.

One that is the lowest or smallest in importance, rank, magnitude, or degree: The dinner menu is the least of my worries tonight. The least you can do is to be polite.

Idioms:

at least

1. According to the lowest possible assessment; not less than: waited at least an hour.

2. In any event; anyway: You might at least answer.

in the least

At all: I don't mind in the least.

least of all

Particularly not: Nobody cared, least of all the manager.

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[Middle English, from Old English lst; see leis-² in Indo-European roots.]

Thesaurus

Adv.	1.	in the least - to any extent at all; "are you in the least interested?" even a little
	2.	in the least - in the slightest degree or in any respect; "Are you at all interested? No, not at all"; "was not in the least unfriendly" at all, the least bit