loony/ˈlu:nɪ; `lunɪ/ n, adj (sl 俚) (person who is) crazy or eccentric; lunatic 疯狂的; 怪诞的; 疯子; 狂人 He does have some pretty loony ideas. 他的确有些颇为狂妄的想法.
牛津英汉双解词典