形容詞 deceitful:

1. intended to deceive
   同義詞：fallacious, fraudulent
2. marked by deliberate deceptiveness especially by pretending one set of feelings and acting under the influence of another- W.M.Thackeray
   同義詞：ambidextrous, double-dealing, duplicitous, Janus-faced, two-faced, double-faced, double-tongued

1. His political opponents tore away the show of sincerity covering his deceitful intention.
   他的政治上的對手揭去了他那欺騙性目的真誠外表。
2. His political opponents were able to tear off the show of sincerity that had been covering his deceitful intentions.
   他的政治對手們能夠戳穿他表面的誠實，揭露他隱藏著的欺詐意圖。
3. I advise you not to cooperate with that deceitful businessman.
   我建議你不要和那個不誠實的商人合作。

de.ceit.ful

adj.（形容詞）
Given to cheating or deceiving.
騙人的，欺詐的
Deliberately misleading; deceptive.See Synonyms at dishonest
有意欺騙的；容易使人上當?shù)膮⒁?dishonest

【引伸】
deceit.fully
adv.（副詞）
deceit.fulness
n.（名詞）