His acquisitiveness drove him to exploit workers just to accumulate more wealth.

acquisitiveness 是由动词 acquire（获得）加上形容词后缀 -itive（表示"有...倾向的"）构成形容词 acquisitive（贪婪的），再加上名词后缀 -ness 构成的名词，表示"贪婪获取的特性"。 在句中指"对财富无止境的占有欲"，这种特质驱使他不择手段地剥削工人。