Synonym: authentic, bona fide, genuine, honest, legitimate, real, unaffected. Antonym: false. Similar words: insincere, sincerely, cereal, cerebrum, ceremony, cerebral, sorceress, cancer. Meaning: [sɪn'sɪr /-'sɪə] 
adj. 1. open and genuine; not deceitful 2. characterized by a firm and humorless belief in the validity of your opinions.
adj. 1. open and genuine; not deceitful 2. characterized by a firm and humorless belief in the validity of your opinions. 
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61) The little witch put a mock malignity into her beautiful eyes, and Joseph, trembling with sincere horror, hurried out praying and ejaculating "wicked" as he went.
62) Finally, I'd like to express my sincere thanks to all those who have helped today.
63) I should like to place on record my sincere thanks to all those who have given support.
64) There was a sincere expression of friendliness on both their faces.
65) Life is not composed by aphorism, how can we decorate it with pompous cliche & 1 & s? I send you my most sincere greeting in silence.
66) I wasn't sure that he was sincere in what he was saying.
67) My smile is not entirely sincere.
68) Miguel exhaled, feeling like Spider was being sincere.
69) You can be sincere and still be stupid. Fyodor Dostoyevsky 
70) They were completely sincere in their beliefs.
71) He was relatively honest and a sincere nationalist.
72) This demands sincere and sustained effort by the individual.
73) She also had a sincere right cross.
74) Please accept my most sincere thanks for your interest.
75) Be sincere; be brief; be seated. Franklin D. Roosevelt
76) The State stipulated that respondents' religious beliefs were sincere....
77) Central Council extends its sincere thanks to them all.
78) She's a hardworking(sentence dictionary), sincere person.
79) The pleasant, sincere mess of domesticity.
80) Her grief at his death was deep and sincere.
81) The band is quietly leading a sincere revolution, knitting a genuine boyish irony and bookish intellectualism to instantly memorable songs.
82) Her voice was sincere, but in her heart she meant every word she said.
83) She had formed a favourable impression of him then, as an intelligent, sincere, if rather serious man.
84) On the other hand, are they sincere in their praise?
85) To their families and close friends in Tandragee and Lurgan I extend the sincere sympathies of all those involved in our sport.
86) He also struck me as wholly sincere and a very decent sort.
87) A good talker is not necessarily a sincere man. A religious believer is not necessarily a moral person. Dr T.P.Chia
88) They show that he was thoroughly sincere in his acceptance of collegiality.
89) To say this is not to belittle the sincere concern shown by many religious people in the debate over embryo research.
90) No man can produce great things who is not thoroughly sincere in dealing with himself. James Russell Lowell
More similar words: insincere, sincerely, cereal, cerebrum, ceremony, cerebral, sorceress, cancer, ceremonial, dancer, since, ceremonious, concert, concern, concerned, uncertain, concerning, ever since, long since, disinterested, necromancer, uncertainty, marriage ceremony, going concern, remembrancer, disconcerting, adherence, coherence, be concerned about, deference.