诚恳chéngkěnsincere; earnest; honestHSK 7-9PronunciationchéngkěnExample sentence他诚恳地向老师道歉。Tā chéngkěn de xiàng lǎoshī dàoqiàn.He apologized to the teacher sincerely.Read and choose an answerOne fixed sampleExplore a sample