closet caseWiktionary 原文英美构词拆解closet词干+case词干词源说明From closet + case. First use appears c. 1946 in the Washington Post.释义名词noun1slang, idiomaticA person who conceals or denies their sexuality or gender identity.2slang, idiomaticA person who is shunned, ignored, or considered to be an embarrassment.