發怔

baffled / nonplussed

fa̅ = f + a1

to send out / to show (one's feeling) / to issue / to develop / to make a bundle of money / classifier for gunshots (rounds)

to stare blankly / startled

stumped for words / to stare blankly

發怔 is not used as a component in another word.

發怔 currently does not appear in any sentence.