/ Dictionary / Index E EST: Meaning and Definition of Find definitions for: EST Pronunciation: [key] Eastern Standard Time. -est Pronunciation: [key] a suffix forming the superlative degree of adjectives and adverbs: warmest; fastest; soonest. -est Pronunciation: [key] a native English suffix formerly used to form the second person singular indicative of verbs: knowest; sayest; goest. est. Pronunciation: [key] established. estate. estimate. estimated. estuary. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: est (Thesaurus) Essonne estab. Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language