LENGTHEN Synonyms: 25 Similar and Opposite Words

Q: How does the verb 'lengthen' contrast with its synonyms?

Some common synonyms of lengthen are extend , prolong , and protract . While all these words 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

Q: When might 'prolong' be a better fit than 'lengthen'?

While the synonyms prolong and lengthen are close in meaning, prolong suggests chiefly increase in duration especially beyond usual limits. // prolonged illness

Q: How are the words 'protract' and 'prolong' related as synonyms of 'lengthen'?

Protract adds to prolong implications of needlessness, vexation, or indefiniteness. // protracted litigation

lengthen

verb

ˈleŋ(k)-thən

Definition of lengthen

as in to extend

to make longer I had to lengthen the handle of the paint roller in order to reach the top of the wall

Synonyms & Similar Words

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How does the verb lengthen contrast with its synonyms?

Some common synonyms of lengthen are extend, prolong, and protract. While all these words 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

When might prolong be a better fit than lengthen?

While the synonyms prolong and lengthen are close in meaning, prolong suggests chiefly increase in duration especially beyond usual limits.

prolonged illness

How are the words protract and prolong related as synonyms of lengthen?

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

protracted litigation

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of lengthen Aerohart also lengthens the Aviator's Ember to give users more leverage in plunging the piston. — New Atlas, 8 Oct. 2026 Like Middleton’s pair, these loafers have a sleek silhouette with tapered toe boxes that create a leg-lengthening effect. — Sian Babish, PEOPLE, 3 Oct. 2026 No one can know for certain—the scientists who graph temperatures keep having to lengthen the y-axis. — Bill McKibben, New Yorker, 30 Sep. 2026 Both could go a long way in lengthening the Yankees’ postseason lineup; the righty-swinging Lombard, in particular, provides some needed balance. — Gary Phillips, New York Daily News, 28 Sep. 2026 See All Example Sentences for lengthen

Recent Examples of Synonyms for lengthen

Verb

That question motivated Clark to better understand aging among plants and animals and to look for hints to extend humans' lifespan.

— KYLE MELNICK THE WASHINGTON POST, Arkansas Online, 18 Oct. 2026
It's also got two passive radiators for deep bass, and CMF says it's tuned the driver to extend its low-end range.

— New Atlas, New Atlas, 17 Oct. 2026

Definition of extend

Verb

Ukraine's leader warned that easing sanctions without a commitment from Russia to de-escalate the war will only prolong it.

— Azhar Sukri, CNBC, 10 Oct. 2026
This is how most consumers first engage with collections, and re-sees create a second — and more intimate — moment for the pieces online, enabling brands to prolong the momentum, says Melbourne.

— Madeleine Schulz, Vogue, 8 Oct. 2026

Definition of prolong

Verb

To increase supply, the International Energy Agency agreed on Thursday to release more than 20 million barrels of fuel to the market.

— Arathy Somasekhar Reuters, Arkansas Online, 17 Oct. 2026
Preparing multiple missions Manufacturing more rocket hardware will not increase launch frequency unless teams can prepare several missions simultaneously.

— Aamir Khollam, Interesting Engineering, 17 Oct. 2026

Definition of increase

Verb

The center of the low is expected to impact North Carolina and Virginia, with effects stretching up to coastal New Jersey and down to Florida.

— Robin Webb, Sun Sentinel, 18 Oct. 2026
The Capricorn Moon squares the Libra Sun, and a social plan or future idea could stretch your resources more than expected.

— Tarot.com, The Orlando Sentinel, 18 Oct. 2026

Definition of stretch

Verb

Starting with a scene that feels real and looks real lets McKeown get away with what is otherwise a silly creature feature, elongated but never past the point of enjoyment.

— Daniel Fienberg, HollywoodReporter, 8 Oct. 2026
The silhouette also features an elongated, closed pointed-toe that gives them a more modern feel.

— Karla Rodriguez, Footwear News, 8 Oct. 2026

Definition of elongate

Browse Nearby Words

length

lengthen

lengthened

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“Lengthen.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/lengthen. Accessed 21 Oct. 2026.

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Synonyms of lengthen

verb

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