INDIFFERENT, adj.
Imperfectly sensible to distinctions among things.
"You tiresome man!" cried Indolentio's wife, "You've grown indifferent to all in life." "Indifferent?" he drawled with a slow smile; "I would be, dear, but it is not worth while."
Apuleius M. Gokul
--Ambrose Bierce - The Devil's Dictionary