诚恐诚惶
chéng​kǒng​chéng​huáng

in fear and trepidation

  1. 诚 誠 chéng
    truly
    (literary) really; truly; indeed; used to confirm a fact similarly to 的确 dí​què or 实在 shí​zài
  2. 恐 kǒng noun
    to fear
    (bound form) to fear; to dread; to be frightened; also used to describe a feeling of panic or being alarmed
  3. 诚 誠 chéng
    truly
    (literary) really; truly; indeed; used to confirm a fact similarly to 的确 dí​què or 实在 shí​zài
  4. 惶 huáng
    to be afraid
    (bound form) afraid; fearful; anxious or uneasy, as in 惶恐 huáng​kǒng or 惊惶 jīng​huáng