habitual
The word "inactive" best describes someone who is inert. It implies a lack of movement or activity.
The word lonely is an adjective. It describes someone who is unhappy at being alone.
rhinotillextomaniac rhino=nose, tillexto=habit
Jolly
Satan
someone/something that is incincere
Incompetent.
youthful young
Lax
That would be a "Homosexual"
naive
kundi