lengthen

verb

length·​en ˈleŋ(k)-thən How to pronounce lengthen (audio)
ˈlen(t)-
lengthened; lengthening
ˈleŋ(k)th-niŋ,
ˈlen(t)th-;
ˈleŋ(k)-thə- How to pronounce lengthen (audio)
ˈlen(t)-

transitive verb

: to make longer

intransitive verb

: to grow longer
lengthener
ˈleŋ(k)th-nər
ˈlen(t)th-;
ˈleŋ(k)-thə- How to pronounce lengthen (audio)
ˈlen(t)-
noun
Choose the Right Synonym for lengthen

extend, lengthen, prolong, protract mean to draw out or add to so as to increase in length.

extend and lengthen imply a drawing out in space or time but extend may also imply increase in width, scope, area, or range.

extend a vacation
extend welfare services
lengthen a skirt
lengthen the workweek

prolong suggests chiefly increase in duration especially beyond usual limits.

prolonged illness

protract adds to prolong implications of needlessness, vexation, or indefiniteness.

protracted litigation

Examples of lengthen in a Sentence

The days lengthened with the approach of spring. Proper care will lengthen the life of the engine. lengthen a pair of trousers
Recent Examples on the Web Based on the trends seen in those data, on average, U.S. residents have gone from experiencing two heat waves each summer in the 1960s to more than six today—and the duration of those heat waves has lengthened from three days to four. Andrea Thompson, Scientific American, 19 June 2024 Think: the volumizing Panorama mascara that manages to lengthen and define each lash, or the Color Riche Satin Lipstick—both of which have made their way into Kendall Jenner’s 2024 beauty routine. Kiana Murden, Vogue, 18 June 2024 Chloe Kang, the student representative on the board and a rising junior at Liberty High School, suggested that the board lengthen the sign-up window for interested speakers. Thomas Goodwin Smith, Baltimore Sun, 14 June 2024 Although many of these Israelis have ended their service, some are still mobilized, and Israel plans to lengthen service in the future despite the cost to the Israeli economy and the disruption to ordinary Israelis’ lives. Daniel Byman, Foreign Affairs, 5 Apr. 2024 See all Example Sentences for lengthen 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'lengthen.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

14th century, in the meaning defined at transitive sense

Time Traveler
The first known use of lengthen was in the 14th century

Dictionary Entries Near lengthen

Cite this Entry

“Lengthen.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lengthen. Accessed 4 Jul. 2024.

Kids Definition

lengthen

verb
length·​en ˈleŋ(k)-thən How to pronounce lengthen (audio)
ˈlen(t)-
lengthened; lengthening ˈleŋ(k)th-(ə-)niŋ How to pronounce lengthen (audio)
ˈlen(t)th-
: to make or become longer
lengthener noun

More from Merriam-Webster on lengthen

Last Updated: - Updated example sentences
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