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."
Yes.
littlest or least
The comparative form of "little" is "less" and the superlative form is "least."
The decreasing superlative of rude is least rude.
Adjective, comparative, superlative little, less, least
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.