From WordNet (r) 3.0 (2006) :
lead astray v 1: teach immoral behavior to; "It was common practice to lead off the young ones, and teach them bad habits" [syn: lead off, lead astray] 2: lead someone in the wrong direction or give someone wrong directions; "The pedestrian misdirected the out-of-town driver" [syn: mislead, misdirect, misguide, lead astray] 3: cause someone to believe an untruth; "The insurance company deceived me when they told me they were covering my house" [syn: deceive, betray, lead astray] [ant: undeceive]