Lengthiness 

When you are describing how long something is as something while not being particularly sure something's exact length.

The lengthiness of it often turns away beginners.

Lengthiness by GermSol February 11, 2019

lengliness 

Slang for saying clean

Went to Nandos today and I’ve got to tell you, lengliness was not an issue fam!

lengliness by Lulo T November 3, 2022