(zhēng) to stare blankly; startled
(zhèng) stumped for words; to stare blankly
(zhēngchōng) (of the heart) palpitating with fear; palpitation (Chinese medicine)
(zhēngzhōng) frightened; scared; terrified
(zhèngzhèng) in a daze
(zhēngshénr) lost in thought; in a daze