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 The current deal framework would cede sovereignty but lease the Diego Garcia base for 99 years, ban other nations from utilizing nearby islands without British consent, and open the door to negotiations prolonging the arrangement in 40-year intervals. Timothy Nerozzi, The Washington Examiner, 6 Feb. 2026 Heat also can raise evaporation rates, further stressing vegetation and prolonging dry conditions, especially when winds increase. Newsroom Meteorologist, Houston Chronicle, 6 Feb. 2026 Half-measures will only prolong the harm. Judy Gradwohl, San Diego Union-Tribune, 5 Feb. 2026 The verdict signals that prolonged prone restraint during mental health crises is dangerous, potentially changing how juvenile detention centers handle distressed teens. Los Angeles Times, 5 Feb. 2026 See All Example Sentences for prolong
Recent Examples of Synonyms for prolong
Verb
  • While that was to be only three weeks, Mohammadi’s time out of prison lengthened, possibly as activists and Western powers pushed Iran to keep her free.
    CNN Money, CNN Money, 9 Feb. 2026
  • Her medical furlough was initially to be for three weeks, but her time out of prison lengthened, possibly on account of activists and Western powers pushing Iran to keep her free.
    Jon Gambrell, Los Angeles Times, 8 Feb. 2026
Verb
  • Kawhi Leonard made two free throws, but the Rockets scored the next four points to extend the lead.
    Los Angeles Times, Los Angeles Times, 11 Feb. 2026
  • The vote on Tuesday sought to extend previous language that blocked tariff repeal resolutions from getting a vote, which expired at the end of January.
    Rachel Schilke, The Washington Examiner, 11 Feb. 2026
Verb
  • The program will start with 3,000 volunteers to be selected next summer and will gradually increase to 10,000 per year by 2030.
    Arkansas Online, Arkansas Online, 8 Feb. 2026
  • Allowing its use on these two common crops will drastically expand how much is applied and increase harm, advocates say.
    Michael Phillis, Los Angeles Times, 7 Feb. 2026

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Cite this Entry

“Prolong.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/prolong. Accessed 14 Feb. 2026.

More from Merriam-Webster on prolong

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