prolong

verb

pro·​long prə-ˈlȯŋ 

prolonged; prolonging; prolongs

transitive verb

1

: to lengthen in time : continue

2

: to lengthen in extent, scope, or range

prolongation

(ˌ)prō-ˌlȯŋ-ˈgā-shən  prə- 

noun

prolonger

prə-ˈlȯŋ-ər 

noun

Synonyms

• drag (out)
• draw out
• elongate
• extend
• lengthen
• outstretch
• protract
• stretch

Choose the Right Synonym for prolong

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 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

Read More: Rather than needing a method to cook these large amounts of meat, these early humans needed a way to prolong the availability and longevity of meat for consumption over time. —Sam Walters, Discover Magazine, 5 June 2025

Many see the peace talks as a charade that both sides know will fail, prolonged only to avoid the ire and impatience of President Donald Trump. —Keir Simmons, NBC news, 3 June 2025

Kyiv has long sought to impress upon the Kremlin that there are costs to prolonging its campaign, but some analysts have warned that the operation – which struck Russian airfields thousands of miles from Ukraine’s borders – will only replenish Moscow’s resolve. —Christian Edwards, CNN Money, 2 June 2025

Antoine Griezmann has signed a one-year contract extension with Atletico Madrid, prolonging his stay in the Spanish capital until June 2027. —Leon Imber, New York Times, 2 June 2025

Word History

Etymology

Middle English, from Middle French prolonguer, from Late Latin prolongare, from Latin pro- forward + longus long

First Known Use

15th century, in the meaning defined at sense 1

Rhymes for prolong

• agung
• along
• belong
• birdsong
• furlong
• headlong
• headstrong
• lifelong
• plainsong
• sarong
• tanjong
• weeklong

Kids Definition

prolong

verb

pro·​long prə-ˈlȯŋ 

: to make longer in time

prolonged the visit