Origin: 1350–1400; ME mercenarie < L mercēnnārius working for pay, hired worker, mercenary, perh., repr. earlier *mercēd(i)nārius, equiv. to *mercēdin-, s. of *mercēdō, a by-form of mercēs, s. mercēd- payment, wage (akin to merx goods; cf. merchant) + -ārius-ary
Motivated solely by a desire for monetary or material gain.
Hired for service in a foreign army.
n.
pl.mer·ce·nar·ies
One who serves or works merely for monetary gain; a hireling.
A professional soldier hired for service in a foreign army.
[Middle English mercenarie, a mercenary, from Old French mercenaire, from Latin mercēnnārius, from mercēs, wages, price.] mer'ce·nar'i·ly adv., mer'ce·nar'i·ness n.
c.1386, "one who works only for hire," from L. mercenarius "one who does anything for pay," lit. "hired, paid," from merces (gen. mercedis) "pay, reward, wages," from merx (see market). The adj. is recorded from 1532.