愕然
'taru' adjective
Adverb
1
adverb taking the 'to' particle
asombro;estupefacción
1
adverb taking the 'to' particle
astonished;shocked;amazed;astounded;aghast
usu. as ～とする
あのニュースを聞いた時にはがくぜんとした。
When I heard the news I was caught with my pants down.
Other forms
がく然 【がくぜん】 (search-only kanji form)