certifiably
🇺🇸
/ˈsɜːrtɪfaɪəbli/
🇬🇧
/ˈsɜːtɪfaɪəbli/
adverb
R
Proven to be true or genuine by an official document or authority.
The doctor said that he was certifiably sane, which was a relief to everyone.
医師は彼が精神的に正常であると証明し、それは皆にとって安心した。
translation
証明された