adjective
Definition: The smallest amount or degree of something, or the lowest in importance or rank.
Example: She is the least experienced member of the team.
adverb
Definition: In the smallest amount or degree possible.
Example: She is the least experienced member of the team.
noun
Definition: A person or thing that is the lowest in importance, rank, or degree.
Example: He is considered the least among his peers in terms of experience.