Synonyms of lengthen

lengthen

verb

ˈleŋ(k)-thən 

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

• extend
• prolong
• increase
• stretch
• elongate
• protract
• expand
• drag (out)
• draw out
• enlarge
• outstretch
• amplify
• attenuate
• thin

Antonyms & Near Antonyms

• shorten
• cut
• reduce
• curtail
• decrease
• cut back
• diminish
• lessen
• abridge
• abbreviate
• thicken

Synonym Chooser

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

Recent Examples of lengthen

Bregman’s improvement has been a complement to Pete Crow-Armstrong’s incredible season and lengthens the Cubs lineup. — Andy Martinez, Chicago Tribune, 11 Sep. 2026

The new style is part of the Gucci Primavera collection, and the Donna features a striking, pronounced outline and clean lines all around, lengthening the leg. — Karla Rodriguez, Footwear News, 4 Sep. 2026

The piece was based on a recent study from UCLA that found that waiting times for surgery for nonmetastatic breast, colon, lung, pancreatic, gastric and esophageal cancer have lengthened across the board over the last 10 years or so. — Business Columnist, Los Angeles Times, 3 Sep. 2026

These Spanx Micro Flare Pants have a subtle bootcut design for an ultra-flattering, leg-lengthening look. — Melony Forcier, Travel + Leisure, 2 Sep. 2026