serviceable
adj.
"ready to do service," early 14c., from Old French servicable, from servise (see service, n.1). Related: Serviceability.
Edgar: I know thee well: a serviceable villain,
As duteous to the vices of thy mistress
As badness would desire.
["King Lear," IV.vi.]
As duteous to the vices of thy mistress
As badness would desire.
["King Lear," IV.vi.]