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