字辨
sincere: 指言语或行动诚摰而无谎言或欺瞒的
Thank you very much for your sincere offer of help.
unfeigned: 强调无谎言或虚伪,而是出自本心自然发生的
an unfeigned praise
unaffected: 指非矫揉造作,而是纯真质朴的
an unaffected smile
hearty: 指表露于外的温暖的言辞或亲切
hearty welcome
heartfelt: 指心中所持有的真意
heartfelt sympathy