find out

verb

1. establish after a calculation, investigation, experiment, survey, or study

   verb.communication

   Synonyms ascertain determine find

   Source: WordNet 3.0

2. get to know or become aware of, usually accidentally

   verb.cognition

   Synonyms discover get a line get wind get word hear learn pick up see

   Source: WordNet 3.0

3. find out, learn, or determine with certainty, usually by making an inquiry or other effort

   verb.communication

   Examples

   Find out if he speaks Russian.

   Synonyms ascertain check determine learn see watch

   Source: WordNet 3.0

4. trap; especially in an error or in a reprehensible act

   verb.cognition

   Synonyms catch out

   Source: WordNet 3.0