indefensible
Definitions
Not able to be maintained or justified against criticism or attack.
Incapable of being protected or defended from physical assault.
Examples
The politician's actions were widely considered indefensible by both his supporters and his critics.
It is morally indefensible to ignore the suffering of those who have lost everything in the disaster.
Synonyms
unjustifiable inexcusable untenable unforgivable unwarranted