فاعل

Etymology
of the verb.

Adjective

 * 1) effective
 * 2) efficient

Noun

 * 1) doer, one who does something
 * 2) worker

Noun

 * 1)  subject, agent

Etymology
.

Noun

 * 1)  subject
 * 2)  top, the penetrating partner in a male homosexual intercourse