unfriendn.
ʌn'frend
中文n. 在Facebooke等社交网站上与某人解除好友关系
词根词源
unfriend (v.)in the Facebook sense, attested from November 2007, from un- (1) "not" + friend (v.). Unfriended is at least as old as Shakespeare in the sense "friendless." A noun unfriend "enemy" is recorded from late 13c., chiefly in Scottish, and was still in use in the 19th century.
关键词