Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary




Synonyms and Antonyms of lengthy

  1. 1 of great extent from end to end <she used a lengthy piece of rope to tie her dog to a tree> Synonyms elongate (or elongated), extended, king-size (or king-sized), longRelated Words extensive, far-reaching, longish, outstretched; oblong, rectangular; big, biggish, considerable, hefty, hulking, jumbo, large, largish, overscale (or overscaled), oversize (or oversized), sizable (or sizeable), substantial, superNear Antonyms abbreviated, abridged, curtailed, diminished, shortened; bitty, diminutive, little, miniature, minute, puny, small, smallish, teeny, tiny, undersized (also undersize), weeAntonyms brief, curt, short, shortish

  2. 2 lasting for a considerable time <the store manager gives new associates a lengthy sermon on the evils of shoplifting> Synonyms extended, far, great, long, long-drawn-out (or long-drawn), long-lived, long-termRelated Words aeonian (or aeonic), endless, everlasting, interminable, persistent; longish, overlong, prolonged, protracted; permanent; all-day, all-night; multiday, multiyearNear Antonyms abrupt, sudden; abbreviated, condensed, curtailed, shortened; ephemeral, fleeting, momentary, transient, transitory; impermanent; short-rangeAntonyms brief, little, mini, short, shortish, short-lived, short-term

Learn More about lengthy

Seen and Heard

What made you want to look up lengthy? Please tell us where you read or heard it (including the quote, if possible).


of a yellow-green or bluish-gray color

Get Word of the Day daily email!