Lymphadenopathy
The longest word that starts with q is quintoplets!!!What about Quartermasterships?
The longest English word that starts with 'l' and ends with 'd' is "linguistically." It has 12 letters and pertains to language or linguistics. However, if you're specifically looking for a word that fits the criteria and is a common usage term, "languished" is another option, though it's shorter at 10 letters.
Nonmodal is MAYBE the longest word.
methionylglutaminylarginyltyrosylglutamylseryllleucylpheny
Kennethrobertofitzwaterayjameseepatriciacashiichelsayybrianaeasthamaiecaittlinapaigerboothean.
supercalifragilisticexpialidocious.
SMILER - There is a mile between the s and the r!
A 5 letter word that starts with an L is Lipid
The only word that starts with an L that rhymes with lake is the word lake itself.
watermelons
21-letter wordbuckminsterfullerenes
Erectile