Slothful, a.
Addicted to sloth; inactive; sluggish; lazy; indolent; idle. He also that is slothful in his work is brother to him that is a great waster. Prov. xviii. 9. -- Sloth"ful*ly, adv. -- Sloth"ful*ness, n.
Shades of meaning
Fernald has no entry of its own for slothful; he lists it under idle.
Where he writes about it:
Slothful belongs in the moral realm, denoting a self-indulgent aversion to exertion. — from idle
"The slothful hideth his hand in his bosom; it grieveth him to bring it again to his mouth," Prov. xxvi, 15. — from idle
Indolent is a milder term for the same quality; the slothful man hates action; the indolent man loves inaction. — from idle