lengthy

1 of 2

adjective

ˈleŋ(k)-thē 

ˈlen(t)-

lengthier; lengthiest

1

: protracted excessively : overlong

2

: extended, long

lengthily

ˈleŋ(k)-thə-lē 

ˈlen(t)-

adverb

lengthiness

ˈleŋ(k)-thē-nəs 

ˈlen(t)-

noun

lengthiness

2 of 2

noun

length·​i·​ness -thēnə̇s 

-thin-

plural -es

: the quality or state of being lengthy : prolixity

Synonyms of lengthy

Adjective

• long
• elongate

Examples of lengthy in a Sentence

Adjective

The process is both lengthy and costly.

a series of lengthy delays

Lengthier trips require more planning.

Recent Examples on the Web

Adjective

There was no opening act, no lengthy introduction and no unnecessary buildup. — Jamie Graziano, Charlotte Observer, 31 July 2026

Hur, following his investigation into Biden’s alleged mishandling of classified documents, released a lengthy report in February 2024 that concluded no criminal charges were warranted against Biden. — Antonio Pequeño Iv, Forbes.com, 30 July 2026

The lengthy hearing offered a trove of new information and a preview of potential defenses the singer’s lawyers might trot out at trial. — Los Angeles Times, 30 July 2026

The board also voted down a proposal to increase rider fares to generate between $8 million and $12 million after a lengthy discussion and multiple failed amendments aimed at trying to persuade a majority of directors to pass the motion. — Katie Langford, Denver Post, 29 July 2026

Word History

First Known Use

Adjective

1689, in the meaning defined at sense 1

Kids Definition

lengthy

adjective

ˈleŋ(k)-thē 

ˈlen(t)-

lengthier; lengthiest

: very long

lengthily

-thə-lē 

adverb

lengthiness

-thē-nəs 

noun