a person who makes bad use of something or uses so much of something that it harms their health 滥用 a drug abuser 嗜毒者
a person who treats another person or animal in a cruel or violent way, especially sexually 虐待;(尤指)性虐待;伤害 a child abuser 虐待儿童者
a person or an organization that uses power or knowledge unfairly or wrongly 滥用,妄用(权力、所知所闻) The country is a notorious abuser of human rights. 这个国家是臭名昭著的侵犯人权者。