insincere

形容词 insincere:

1. lacking sincerity

1. 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。
2. Excessive or insincere praise.
   甜言蜜语过分的或不真诚的赞扬
3. One who seeks favor, especially by insincere flattery or obsequious behavior.
   奉承者，谄媚者寻求好感的人，尤指通过不真诚的奉承和殷勤的举止
4. Insincere or hypocritical.
   不真诚的，虚伪的

in.sin.cere

adj.（形容词）
Not sincere; hypocritical.
不忠诚；虚伪的

【引伸】
in.sincere.ly
adv.（副词）
in.sincer.ity