Earliest

the GNU version of the Collaborative International Dictionary of English
  • adjective. preceding all others in time.
  • Wiktionary, Creative Commons Attribution/Share-Alike License
  • adjective. superlative form of early: most early.
  • adverb. superlative form of early: most early.
  • WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
  • adjective. (comparative and superlative of `early') more early than; most early
  • adverb. with the least delay
  • Word Usage
    "The first and earliest is a reference to the Dictionary of Modern Slang, Cant, and Vulgar Words, Used at the Present Day in the Streets of London; the Universities of Oxford and Cambridge; the Houses of Parliament; the Dens of St. Giles; and the Palaces of St. James; Preceded by a History of Cant (1859) by J [ohn]."
    Equivalent
    early  
    Synonym
    Words with the same meaning