agape Play adjective(of the mouth) wide open, especially with surprise or wonder. SYNONYMS agapeaghastamazedastoundedawedawestruckconfoundeddazeddumbfoundeddumbstruckfilled with amazementfilled with astonishmentfilled with awefilled with wonderlost for wordsnonplussedopen-mouthedstaggeredstartledstunnedstupefiedsurprisedtaken abackthunderstruckwide-eyedwonderstruck