使い

Etymology
Continuative form of

Noun

 * 1) using; usage; use; utilization
 * 2) a user
 * 3)  a charmer
 * 4) an envoy; a messenger
 * 1)  a charmer
 * 2) an envoy; a messenger

Suffix

 * 1) -er; -ist; -ator; -mancer