ascertain
definition: to learn or discover with certainty
example: The detective ascertained that the suspect was at home on the night of the crime.
speech part: verb
synonyms:
definition: to establish after a calculation, investigation, experiment, survey, or study
example: I ascertained the moth's growth cycle.
speech part: verb
synonyms:
find
definition: to find out, learn, or determine with certainty, usually by making an inquiry or other effort
example: They ascertained the facts of the crime.
speech part: verb
synonyms:
check