1) Badly taken 2) Cheated 3) Conned 4) Deceived 5) Deluded 6) Fooled 7) Gulled 8) Hoaxed 9) Hoodwinked 10) Hornswoggled 11) Made a copy of 12) Made a fool of 13) Misled 14) Played for a fool 15) Pulled a fast one on 16) Put one over on 17) Snookered 18) Snowed 19) Taken for a ride 20) Taken in 21) Taken to the cleaners Found on https://www.crosswordclues.com/clue/duped