frank, honest, sincere, truthful ☊ 
thành thật 
honest like: thành thật → →
aufrichtig ☊ 
thật thà, thành thật ☊ 
坦诚的 ☊ tǎnchéng de aufrichtig ☊ thật thà, thành thật ☊ ☊ She promised faithfully not to tell anyone my secret. ☊ faithfully ☊
honest (with sb): Thank you for being so honest with me. ☊ honest ☊
Give me your honest opinion. ☊ honest ☊
I can't believe he got that money honestly. ☊ honestly ☊
respect sb/sth for sth: She had always been honest with me, and I respect her for that. ☊ respect ☊
To be honest with you, I don't remember what he said. ☊ to ☊