Definition of prolongnext

Synonym Chooser

How does the verb prolong contrast with its synonyms?

Some common synonyms of prolong are extend, lengthen, and protract. While all these words mean "to draw out or add to so as to increase in length," prolong suggests chiefly increase in duration especially beyond usual limits.

prolonged illness

How do extend and lengthen relate to one another, in the sense of prolong?

Both 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

How are the words protract and prolong related?

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 prolong Regular cleaning will help keep them from clogging and prolong their life. Brandee Gruener, Southern Living, 1 July 2026 Restrictions that prevent Ukraine from striking legitimate military targets only help Russia preserve sanctuary, mass forces, and prolong the war. David A. Deptula, Forbes.com, 30 June 2026 Further, there is no biological plausibility or clinical evidence supporting a life-prolonging effect of chiropractic care, especially for systemic disease as claimed by some in the field. David S. Shapiro, STAT, 30 June 2026 While chances for thunderstorms later in the week could cool off the area in time for the July 4th holiday, any reduced storm coverage could prolong the hot stretch. Chicago Tribune, 29 June 2026 See All Example Sentences for prolong
Recent Examples of Synonyms for prolong
Verb
  • These large-range movements keep your body moving through the stretch, shortening and lengthening your muscles.
    Hannah Harper, Health, 1 July 2026
  • The hunting season has been lengthened by nearly two months, and there is no bag limit on does.
    Burkhard Bilger, New Yorker, 29 June 2026
Verb
  • Junior Caminero has already done some things no Rays players had ever accomplished, such as extending his sizzling power show on Friday to include hitting 10 home runs over a 10-game span.
    Marc Topkin, The Orlando Sentinel, 5 July 2026
  • With runners on second and third, in a 1-2 count, Pages extended to the outside edge of the plate to get around a slider and send it through the left side of the infield.
    Maddie Lee, Los Angeles Times, 5 July 2026
Verb
  • The state also has goals, including some that have been in place since 2012, that set declining limits on smog-causing pollutants and required automakers to sell increasing percentages of electric and hybrid vehicles through 2025.
    Los Angeles Times, Los Angeles Times, 3 July 2026
  • The news came a day before Liz reported on Hong Kong’s beleaguered cinema market finally having an upturn, with overall box office revenues increasing by 25% thanks to a strong line-up of local and Hollywood releases.
    Max Goldbart, Deadline, 3 July 2026

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Cite this Entry

“Prolong.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/prolong. Accessed 7 Jul. 2026.

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