Definition of lengthy in English:

lengthy

Syllabification: length·y
Pronunciation: /ˈleNG(k)THē
 
/

adjective (lengthier, lengthiest)

(Especially in reference to time) of considerable or unusual length, especially so as to be tedious: lengthy delays a lengthy book
More example sentences
  • No student can afford to run a lengthy trial because of the risk that you will have to pay costs.
  • After a lengthy break, Marino is back and is pretty much picking up where he left off.
  • He will not need a lengthy learning period before getting up to speed on Asian issues.
Synonyms
long, very long, long-lasting, prolonged, extended
informal marathon
protracted, overlong, long-drawn-out; verbose, wordy, prolix, long-winded; tedious, boring, interminable

Derivatives

lengthily

Pronunciation: /-THəlē/
adverb
More example sentences
  • He lengthily detailed the intelligence findings he had seen, concluding, ‘These weapons represent an unacceptable threat.’
  • I think it's vitally important we all take a deep breath and prepare to think a little lengthily, a little earnestly, about where we're going.
  • Murray listens to them courteously; then he replies lengthily.

lengthiness

noun
More example sentences
  • I know that most people seem to only skim my posts, so I really do post just for myself, but I'm feeling all-encompassing today, so I apologize for the lengthiness.
  • Anyway, apologies for the lengthiness of this reply, but the sense of nostalgia is lingering.
  • I apologize for the lengthiness of this description.

Definition of lengthy in:

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Pronunciation: ˈhjuːbrɪs
noun
excessive pride or self-confidence