The meaning of LENGTHY is protracted excessively : overlong. How to use lengthy in a sentence.

Add to word list taking a long time: a lengthy speech (Definition of lengthy from the Cambridge Academic Content Dictionary © Cambridge University Press)

1. Of considerable length, especially in time; extended: a lengthy convalescence. 2. Tediously long; drawn-out: a lengthy explanation.

You use lengthy to describe an event or process which lasts for a long time. ...a lengthy meeting. ...the lengthy process of filling out passport application forms.

Definition of lengthy adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

6 days ago · Adjective lengthy (comparative lengthier, superlative lengthiest) Having length; long and overextended, especially in time rather than dimension.

WordReference Random House Unabridged Dictionary of American English © 2025 length•y (lengk′ thē, leng′ -, len′ -), adj., length•i•er, length•i•est. having or being of great length; very long: a lengthy …

Definition of lengthy. English dictionary and integrated thesaurus for learners, writers, teachers, and students with advanced, intermediate, and beginner levels.

LENGTHY definition: having or being of great length; very long. See examples of lengthy used in a sentence.

lengthy, adj. meanings, etymology, pronunciation and more in the Oxford English Dictionary