dissatisfied, disappointed
Lighthearted is a 12 letter word. Lithographed is another 12 letter word that starts with L and ends with D.
cantankerous
elastication, evaluational
Suffragettes.
handsomenessharmlessnesshelplessnesshomelessnesshopelessnesshorribleness
denomination
lsjfl
lifelessness listlessness longitudinal loquaciously lusciousness
exaggerative, exhilarative exaggerative, exhilarative
Exterminable
chauvinisticcatastrophic
2 Main Words are Child-prodigy and Cross-country.