WordWeb Online

1. Find out, learn, or determine with certainty, usually by making an inquiry or other effort
   "find out if he speaks Russian";
   - determine, check, see, ascertain, watch, learn
    
2. Get to know or become aware of, usually accidentally
   "I found out that she has two grown-up children";
   - learn, hear, get word, get wind, pick up, get a line, discover, see
    
3. Establish after a calculation, investigation, experiment, survey, or study
   "find out the product of two numbers";
   - determine, find, ascertain
    
4. Trap; especially in an error or in a reprehensible act
   "She was found out when she tried to cash the stolen checks";
   - catch out [informal]

Derived forms: found out, finding out, finds out

Type of: detect, discover, find, notice, observe