superlative adjective

Superlatives are a form of adjectives used in grammar to describe something as having "the most" of a quality, indicating an extreme or unsurpassed level. This is the highest degree of comparison.123

Many adjectives form their superlatives by adding "-est" (e.g., "smallest," "greenest"). For adjectives with more syllables, "most" is used (e.g., "most intelligent," "most beautiful"). Some adjectives have irregular superlative forms, like "good" becoming "best". Not all adjectives can form superlatives; some, like "fatal," are considered absolute.1

In common usage, "superlative" means of the very best kind, excellent, or supreme.42