Yes.
Least is the superlative for less.
"Less" is a comparative of the word little. Its superlative form is least.
The negative superlative of familiar would be "least familiar."
The comparative of "little" is "less" and the superlative is "least."
The comparative form of "little" is "less" and the superlative form is "least."
littlest or least
Yes.
Adjective, comparative, superlative little, less, least
The decreasing superlative of rude is least rude.
Neither. Least is superlative.
Its "least" Little-less-least.
The superlative may be either littlest, or least. The comparative may be littler, less, or lesser.