Wordnet 3.0
NOUN (1)
1. 
 the superlative form of an adjective or adverb; 
- Example: "`fastest' is the superlative of the adjective `fast'"- Example: "`least famous' is the superlative degree of the adjective `famous'"- Example: "`most surely' is the superlative of the adverb `surely'"[syn: superlative, superlative degree]
WordNet (r) 3.0 (2006):
superlative degree
    n 1: the superlative form of an adjective or adverb; "`fastest'
         is the superlative of the adjective `fast'"; "`least
         famous' is the superlative degree of the adjective
         `famous'"; "`most surely' is the superlative of the adverb
         `surely'" [syn: superlative, superlative degree]