ascertained

/ˌæsəˈteɪnd/

Misollar

I ascertained that he was still alive.
I've ascertained the identity of the victim.
She ascertained that the novel was based on facts.

fe’l verb

To find out definitely; to discover or establish. As soon as we ascertain what the situation is, we can plan how to proceed.
To make (someone) certain or confident about something; to inform.
To establish, to prove.
To ensure or effect.

Manbalar: Wiktionary (Free Dictionary API orqali), Datamuse, Tatoeba (CC BY 2.0 FR), MyMemory.