un·pro·nounce·a·ble 
(ŭn′prə-nounsə-bəl)
(ŭn′prə-nounsə-bəl)adj.
1. Difficult or impossible to pronounce correctly: an unpronounceable last name.
2. Not fit to be mentioned.
- fractionization
- fractionize
- fractious
- fractiously
- fractiousness
- fracture
- frae
- frag
- fragger
- fragile
- fragilely
- fragileness
- fragile X syndrome
- fragility
- fragment
- fragmental
- fragmentally
- fragmentarily
- fragmentariness
- fragmentary
- fragmentation
- fragmentation bomb
- fragmentation grenade
- fragmentize
- fragmentizer