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 prolong in a Sentence
Additives are used to prolong the shelf life of packaged food.
High interest rates were prolonging the recession.
Recent Examples on the Web
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.
Like human dry shampoos, the waterless cleanser prolongs wash day, but without alcohol, parabens, or sulfates.—People Deals Team, People.com, 10 July 2025 Continued rainfall or new storms could prolong or worsen flooding conditions, while subsiding water will still pose risks near riverbanks and in low-lying zones.—Anna Skinner, MSNBC Newsweek, 10 July 2025 No one wants to prolong the girl-group drama any longer than necessary, including the girls themselves.—Kathleen Walsh, Vulture, 9 July 2025 Many families of hostages, realizing that Netanyahu was prolonging the war for his political survival, publicly denounced the Israeli Prime Minister and appealed to President Donald Trump for help.—Ayelet Gundar-Goshen, Time, 7 July 2025 See All Example Sentences for prolong
Word History
Etymology
Middle English, from Middle French prolonguer, from Late Latin prolongare, from Latin pro- forward + longus long
Share