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

Anne Hathaway's sandals will win over heel lovers—and anyone who wants to visually lengthen their legs. —María Munsuri, Glamour, 26 Apr. 2025

Many drug users may not be aware of its presence, but it's known to lengthen the high of traditional short-acting opioids like fentanyl and cause overdoses. —Meira Gebel, Axios, 8 Apr. 2025

For instance, ragweed pollen season in North America has lengthened since 1995. —Paul Smaglik, Discover Magazine, 7 Apr. 2025

Bracamontes said her daughter still can't feel or move her right foot and needs three more operations: one to relieve nerve pain, and two to try to restore mobility in her foot by lengthening her Achilles tendon and transferring a tendon in her left leg into her right. —Jordan Rau, CBS News, 27 Mar. 2025