also: ながたらしい
i-adjective
Expresses irritation or criticism about something being unnecessarily long, such as a speech, explanation, or text. Often used in casual, negative evaluations.
彼のスピーチは長ったらしくて、みんな飽きていた。
His speech was so long-winded that everyone got bored.
This manual is so lengthy that I don't feel like reading it.