relatively long in duration; tediously protracted
"a drawn-out argument"
"an extended discussion"
"a lengthy visit from her mother-in-law"
"a prolonged and bitter struggle"
"protracted negotiations"
Having length; long and overextended, especially in time rather than dimension.
"The lengthy debate lasted well into the night without reaching a conclusion."
In plain English: Lengthly means taking up more time than usual, often making something feel slow and boring to get through.
"The lecture was so lengthy that many students left before it ended."
Usage: Use "lengthy" to describe speeches or documents that are tedious due to excessive detail, but avoid applying it to physical objects like ropes or roads. It often carries a negative connotation of unnecessary prolongation rather than simply being long.
The word lengthy is formed by adding the suffix -y to the noun length. It simply means having a great or excessive length.