adj.不真诚的；虚伪的
Don't speak like that. It sounds insincere to me. 别这样讲话，这样我听起来感到不诚恳。
You have to watch out for insincere people. 你得小心那些虚情假意的人。
He wasted his inheritance on his insincere friends. 他在那些虚伪的朋友身上浪费了自己的遗产。
