profiteer
noun [ C ] disapproving uk/ˌprɒf.ɪˈtɪər/ us/ˌprɑː.fəˈtɪr/
（进行投机倒把等）牟取暴利的人；投机商
a person who takes advantage of a situation in which other people are suffering to make a profit, often by selling goods that are difficult to get at a high price
a war profiteer 发战争财的人