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Synonyms

lengthy

American  
[lengk-thee, leng-, len-] / ˈlɛŋk θi, ˈlɛŋ-, ˈlɛn- /

adjective

lengthier, lengthiest
  1. having or being of great length; very long.

    a lengthy journey.

  2. tediously verbose; very long; too long.

    a lengthy speech.


lengthy British  
/ ˈlɛŋθɪ, ˈlɛŋkθɪ /

adjective

  1. of relatively great or tiresome extent or duration

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of lengthy

An Americanism dating back to 1680–90; length + -y 1

Explanation

Lengthy things are long and drawn out. Your teacher's lengthy lecture might extend far beyond the end of class and leave many people dozing at their desks. The adjective lengthy is almost always used to describe a duration of time (or sometimes a long piece of writing), rather than the physical length of something. So long-lasting speeches and endless waits at the bus stop could both be called lengthy, but you wouldn't describe your friend's long hair that way. Lengthy is an 18th century American invention, also adopted by the British in the nineteenth century.

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Vocabulary lists containing lengthy

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Lengthy appendices compare its versions of episodes such as the Battle of Omdurman and the Boer War with earlier accounts Churchill gave to newspapers and magazines such as Cosmopolitan and Strand.

From The Wall Street Journal • Mar. 22, 2026

"Lengthy suspensions are so expensive. Why is it that this is what taxpayers are spending their money on when it should be on care?"

From BBC • May 11, 2025

Lengthy delays in immigration court proceedings mean immigrants often wait years before their case is completed.

From Los Angeles Times • Oct. 24, 2024

Lengthy as the making of “Furiosa” was, both stars went into the process determined to have a more positive environment than on “Fury Road.”

From Seattle Times • May 15, 2024

Lengthy was the strife And fierce, and hot; and sore the suffering; But proudly we endured it; and shall hear, No doubt, of its far consequence Ere many days.

From The Dynasts by Hardy, Thomas

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