Neither. Least is superlative.
little, less, least
superlative
comparative
No, the word 'mysterious' is an adjective, the positive form.Nouns do not have comparative forms.Adjectives have positive, comparative, and superlative forms; for example:mysterious (positive)more mysterious (comparative)most mysterious (superlative)
comparative
comparative
The word "little" can be compared in three degrees: positive, comparative, and superlative. The positive form is "little," the comparative form is "less," and the superlative form is "least." These forms are used to express varying degrees of smallness or quantity.
more positive
The 3 forms of adjectives are comparative, superlative, and positive. Example: Positive- bad Comparative- worse Superlative- worst
The answer to that question is comparative.
more positive, most positive
positive