The Collaborative International Dictionary
Disserviceable
Disserviceable \Dis*serv"ice*a*ble\, a.
Calculated to do disservice or harm; not serviceable;
injurious; harmful; unserviceable.
--Shaftesbury. --
Dis*serv"ice*a*ble*ness, n.
--Norris. --
Dis*serv"ice*a*bly, adv.
Wiktionary
disserviceable
a. Calculated to do disservice or harm; not serviceable; injurious.