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.

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

3 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 …

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

Used to describe something that takes a great deal of time or is overly long, often implying that it may be tedious or unnecessarily extended. The meeting was quite lengthy and people started to lose …

Lengthy definition: Of considerable length, especially in time; extended.

You use lengthy to describe an event or process which lasts for a long time. The board members held a lengthy meeting to decide future policy.