Mawson, C.O.S., ed. (1870–1938). Roget’s International Thesaurus. 1922.

Class V. Words Releasing to the Voluntary Powers
Division (I) Individual Volition
Section III. Voluntary Action
1. Simple Voluntary Action

690. Agent.

   NOUN:AGENT, doer, actor, performer, perpetrator, operator; executor, executrix; practitioner, worker, old stager; mediary, medium, reagent.
  minister (instrument) [See Instrumentality]; representative (commissioner) [See Consignee], (deputy) [See Deputy]; factor, steward.
  SERVANT [See Servant]; factotum, general, maid-of-all-work, servant-of-all-work, do-all [colloq.].
  [COMPARISONS] bee, ant, working bee, termite, white ant; laboring oar; shaft horse.
  WORKMAN, artisan; craftsman, handicraftsman; mechanic, operative; workingman, laboring man; hewers of wood and drawers of water, laborer, navvy [Eng.]; hand, man, day laborer, journeyman, hack; mere tool [See Instrument]; beast of burden, drudge, fag; lumper, stevedore, roustabout [U. S.].
  maker, artificer, artifex [L.], artist, wright, manufacturer, architect, contractor, builder, mason, bricklayer, smith, forger, Vulcan; carpenter; platelayer; blacksmith, locksmith, sailmaker, tailor, cordwainer, wheelwright.
  machinist, mechanician, engineer, electrician, plumber, gasfitter.
  WORKWOMAN, charwoman, seamstress or sempstress, needlewoman, laundress, washerwoman, “Madonna of the tubs” [Phelps].
  COWORKER, associate, fellow worker, coöperator, colleague, confrère [F.]; party to, participator in, particeps criminis [L.], dramatis personœ [L.]; personnel [F.].
  1. Quorum pars magna fui.—Vergil
  2. Faber est quisque fortunæ suæ.