Rice's theorem
barriotic
free
infecundable
raw
indeducible
unmentionability
dogmatic
dogmatical
consistency
Paris-Harrington theorem
nonclassifiable
Kochen-Specker theorem
unclockable
unquenching
abstract class
value restriction
nonsensicalness
nonprogrammable
noninitialized
beyond dispute
uncomputability
nonsuffixed
uninterpretability
undecidable
unutterability
universal grinder
imperative
imperceivable
pseudoalgorithm
nonshrinkable
nonspecification
nondestroyable
inobscurable
nonprocessable
irretractable
physically unclonable function
irrealizable
mathematical semantics
unendurability
unequivocal
contramodule
nondescribable
nonconformism
nonfactorizable
quenchlessness
unassailable
noncopyrightable
uninstructible
unclassable