detect, observe, find, discover, notice -- (discover or determine the existence, presence, or fact of; "She detected high levels of lead in her drinking water"; "We found traces of lead in the paint")
learn, hear, get word, get wind, pick up, find out, get a line, discover, see -- (get to know or become aware of, usually accidentally; "I learned that she has two grown-up children"; "I see that you have been promoted")
discover, find -- (make a discovery, make a new finding; "Roentgen discovered X-rays"; "Physicists believe they found a new elementary particle")
discover, find -- (make a discovery; "She found that he had lied to her"; "The story is false, so far as I can discover")
unwrap, disclose, let on, bring out, reveal, discover, expose, divulge, break, give away, let out -- (make known to the public information that was previously known only to a few people or that was meant to be kept a secret; "The auction house would not disclose the price at which the van Gogh had sold"; "The actress won't reveal how old she is"; "bring out the truth"; "he broke the news to her"; "unwrap the evidence in the murder case")
discover -- (see for the first time; make a discovery; "Who discovered the North Pole?")