A person whose abilities are less than normal.
That part of the axis of a curved line which is intercepted between the ordinate and the normal.
denormal
Less than normal.
Something which is unutterable (incapable of being physically spoken, incapable of being articulated or expressed, etc.).
Not utterable; incapable of being physically spoken or voiced; unpronounceable.
Not allowed to be spoken; taboo, unspeakable.
Incapable of being articulated or expressed; indescribable, inexpressible.
Extremely bad or objectionable; unspeakable.