The Collaborative International Dictionary
Immalleable
Immalleable \Im*mal"le*a*ble\, a. Not maleable.
Wiktionary
immalleable
a. (context archaic English) Not malleable.
Usage examples of "immalleable".
His lay stopped within him, mean and static and immalleable, and would never alter while he lived.
He was the immalleable, the essence, the beyond reason, beyond logic, beyond civilization, beyond history.