名詞 mercenary:

1. a person hired to fight for another country than their own
   同義詞：soldier of fortune

形容詞 mercenary:

1. marked by materialism
   同義詞：materialistic, worldly-minded
2. used of soldiers hired by a foreign army
   同義詞：freelance
3. profit oriented
   同義詞：mercantile, moneymaking

1. A medieval mercenary.
   中世紀(jì)雇傭軍
2. A German mercenary in the British army in America during the Revolutionary War.
   黑森雇傭兵在美國(guó)革命戰(zhàn)爭(zhēng)時(shí)期，在美國(guó)的英國(guó)軍隊(duì)中的德國(guó)雇傭兵
3. Those mercenaries were hired to fight.
   那些雇傭兵被雇傭來(lái)打仗。
4. His actions are entirely mercenary.
   他的行為完全是為了錢。

mer.ce.nar.y

adj.（形容詞）
Motivated solely by a desire for monetary or material gain.
唯利是圖的：以獲取金錢或物質(zhì)為唯一動(dòng)機(jī)的
Hired for service in a foreign army.
雇傭的：被外國(guó)軍隊(duì)雇傭來(lái)服役的
n.（名詞）
【復(fù)數(shù)】 mer.ce.nar.ies
One who serves or works merely for monetary gain; a hireling.
唯利是圖的人：僅為獲取金錢而服務(wù)或工作的人；以金錢為目的人
A professional soldier hired for service in a foreign army.
雇傭兵：被外國(guó)軍隊(duì)雇傭來(lái)服役的職業(yè)軍人

來(lái)源：
Middle English mercenarie [a mercenary]
中古英語(yǔ) mercenarie [ 雇傭兵]
from Old French mercenaire
源自 古法語(yǔ) mercenaire
from Latin mercôn3rius
源自 拉丁語(yǔ) mercôn3rius
from mercôs [wages, price]
源自 mercôs [工資，價(jià)錢]

【引伸】
mer.cenar.ily
adv.（副詞）
mer.cenar.iness
n.（名詞）