1. Second S
    Really sticks the landing.
  2. Second I
    Never saw it coming. What starts as the word IS evolves into the word ISI with this 3rd letter. ISI is much scarier than IS.
  3. First I
    Starting an Islamic extremist group with I? Real original.
  4. First S
    Is isn't a scary word, but the first S of ISIS doesn't seem to know that. SMH terrorist.