(每日一词）oust

Oust  /aʊst/ v. 将…赶下台，罢免，废黜；赶走；淘汰

meaning: to force someone to leave a position of power, job, place or a competition 

1) 前缀：ou-表示ob-离开（可以简单助记为out) 

2) 词根：st-表示stand 站立

e.g. Police are trying to oust drug dealers from the city. 警方正试图将毒品贩子们从市中心撵走。