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.
translation
Proven to be true or genuine by an official document or authority.