CONCEAL

[verb] - to prevent (something) from being seen or known about; to hide (something)The entrance to the house is concealed behind high gates. [T]I tried to conceal my surprise when she said she was only 22. [T]An accusation has been made that the police concealed vital evidence. [T]Is there something you're concealing from me? [T]He managed to conceal from his parents where he was going. [+ wh- word]