Webster’s Revised Unabridged Dictionary · 1913
Serviceable
Serv′ice·a·ble (sẽrv′ĭs·ȧ·b'l), a. 1. Doing service; promoting happiness, interest, advantage, or any good; useful to any end; adapted to any good end use; beneficial; advantageous. "Serviceable to religion and learning". Atterbury. "Serviceable tools." Macaulay.
I know thee well, a serviceable villain. Shak.
2. Prepared for rendering service; capable of, or fit for, the performance of duty; hence, active; diligent.
Courteous he was, lowly, and servysable. Chaucer.
Bright-hearnessed angels sit in order serviceable. Milton.
Seeing her so sweet and serviceable. Tennnyson.
— Serv′ice·a·ble·ness, n. — Serv′ice·a·bly, adv.