agape1
adjective/əˈɡeɪp/
/əˈɡeɪp/
[not before noun] (formal)- if a person’s mouth is agape, it is wide open, especially because they are surprised or shocked
(嘴巴因吃惊等)大张着 - He watched the spectacle, mouth agape.
他看着这一幕,张大了嘴巴。
- He watched the spectacle, mouth agape.