Yes, some of the essential rules are:  Number of Entities Compared: Superlatives are used when comparing three or more entities.  Using "the": Always include "the" before the superlative form of the adjective or adverb. Some adjectives are absolute and don't have comparative or superlative forms, such as "unique," "perfect," "ideal," etc. Irregular Superlatives: Be aware of irregular superlative forms for certain adjectives and adverbs, such as "best" (from "good") or "worst" (from "bad").