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

   NOUN:INSTRUMENTALITY; aid [See Aid]; subservience or subserviency, intermediacy, intermediation, mediation, intervention, medium, intermedium, intermediary, interagent, intermediate, mediating agency, vehicle, hand; agency [See Agency].
  minister, handmaid; midwife, accoucheur [F.], accoucheuse [fem., F.], obstetrician; servant, slave, maid, valet; friend at court; go-between; cat’s-paw; stepping-stone.
  KEY, master -, pass -, latch- key; “open sesame”; passport, passe-partout [F.], safe-conduct; pull [slang], influence.
  INSTRUMENT [See Instrument]; expedient (plan) [See Plan]; means [See Means].
   VERB:SUBSERVE, minister, mediate, intervene, intermediate, come -, go- between; interpose; pull the -strings, – wires; use one’s influence; be instrumental &c. adj.; pander to; officiate; tend.
   ADJECTIVE:INSTRUMENTAL; useful [See Utility]; ministerial, subservient, serviceable; mediatorial, intermedial, intermediary, intermediate, intervening; conducive.
   ADVERB:THROUGH, by per [L.]; whereby, thereby, hereby; by the agency of [See Agency]; by dint of; by or in virtue of; through the medium of &c. n.; along with; on the shoulders of; by means of [See Means]; by or with the aid of (assistance) [See Aid].
  SOMEHOW; per fas et nefas [L.]; by fair means or foul; somehow or other; by hook or by crook.
   QUOTATION:Man is thy most awful instrument In working out a pure intent.—Wordsworth