Which word does not belong in the following list - and why?

ISSUE
SUGAR
MISHAP
PARACHUTE
OCEAN
SECTION
CONSCIOUS
ANXIOUS
MANSION
SPECIAL

HINT:
Think of the sound SH.

Answer:

MISHAP - Each word contains the SH sound - spelled nine different ways - except MISHAP, which, ironically, is the only word in the list containing the letters SH.