Illegible.
Yes, indestructible is a word. It means incapable of being destroyed.
Terminal
unalienable
what word can I substitute for constitutes
The opposite of the word capable is incapable.
my best guess is permanent
indescribableIneffable. -adjective 1. incapable of being expressed or described in words; inexpressible: ineffable joy.
He was incapable of performing even the most trivial task.
The word is cohabitation.
immobile paralyzed
Audible."inaudible" quite literally means "incapable of being heard"; by stripping the prefix "in-", you get the word "audible", which indeed means "capable of being heard".
in- is the prefix of incapable. Uncapable is not an actual word and it can be mistaken for incapable.