ascertain
/ˌæsəˈteɪn//ˌæsɚˈteɪn/
verb
- 1
To find out definitely; to discover or establish.
“As soon as we ascertain what the situation is, we can plan how to proceed.”
- 2
To make (someone) certain or confident about something; to inform.
- 3
To establish, to prove.
- 4
To ensure or effect.
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