真的，确实，完全，彻底，全然

1. really, truly, entirely, completely, wholly, perfectly

adverb (fukushi) nouns which may take the genitive case particle 'no'

确实

2. indeed

nouns which may take the genitive case particle 'no' adverb (fukushi)

天哪

3. good grief

interjection (kandoushi) word usually written using kana alone

息子の名前を何回も叫び続けたが全く反応しませんでした。

tbd