Intractable and Inexpugnable

Intractable adjective - Given to resisting authority or another's control.

Inexpugnable and intractable are semantically related In some cases you can use "Inexpugnable" instead an adjective "Intractable".

Nearby Words: intractability, intractably

Inexpugnable adjective - Having been established and usually not subject to change.

Intractable and inexpugnable are semantically related in insurmountable topic. You can use "Intractable" instead an adjective "Inexpugnable".