Meaning:
* Long in duration, extent, or scope:
* "The meeting was lengthy, lasting for over three hours."
* "The novel was lengthy, with over 500 pages."
* Characterized by excessive length:
* "The professor's lectures were known for being lengthy and detailed."
* "The company's report was lengthy and filled with technical jargon."
Synonyms:
* Prolonged
* Extended
* Long-winded
* Tedious
* Drawn-out
* Exhaustive
* Comprehensive