per·func·to·ry 
(pər-fŭngktə-rē)
(pər-fŭngktə-rē)adj.
1. Done routinely and with little interest or care: The operator answered the phone with a perfunctory greeting.
2. Acting with indifference; showing little interest or care.
[Late Latin perfūnctōrius, from Latin perfūnctus, past participle of perfungī, to get through with : per-, per- + fungī, to perform.]
per·functo·ri·ly adv.
per·functo·ri·ness n.