1) to find out (something)(in order to be certain) (ascertain)
2) to find out (something) by working with numbers (calculate)
3) to find out (the existence or presence of something) (detect)
4) to decide or fix (something); to find out (something) precisely (determine)
5) to find out (something) (by accident); get knowledge of (something existing but not yet known) (discover)
6) to try to find out more about it (follow-up)
7) to remove a cover or covering from (something); to find out (information about a plan etc) (uncover)
to find out (something)(in order to be certain)
make sure
to see (something) clearly (with the eyes or with the mind)
catch sight of; recognize and understand
to find the answer to (a problem etc); explain (a difficulty)
answer, resolve
to know the meaning, nature, explanation, of (something); to learn (something) from a conversation, remark etc; to accept a word, statement, as meaning (something)
appreciate, comprehend
to discover and cause (something) to be known
dig up
to test the truth or accuracy of (a report etc); (of an event etc) to prove, show, the truth of (something)
confirm, validate