ineffable - Dictionary definition and meaning for word ineffable
in+ef+ fable. fable means story. story can be told. in-fable means something which can not be uttered such as the name of Lord Voldemort (from Harry Potter).
IN+ F(eff) + able--You cannot utter the letter F*** everywhere.There are places where it is unutterable.:)
In Eff :In Eiffel tower,you feel great joy to visit it that you can't describe in words
effe sounds like affe (monkey), which stands for something undescribable, taboo, or beyond expression.