Reply To: The Riddle Thread…. Home › Forums › Decaffeinated Coffee › The Riddle Thread…. › Reply To: The Riddle Thread…. November 22, 2008 9:06 pm at 9:06 pm #1067827 jewishfeminist02Member ICOT: 14) communiCATion 15) copyCAT 17) intriCATe 18) dupliCATe 20) purifiCATion 24) unsCAThed The rest have me stumped.