defensible

US /dɪˈfen.sə.bəl/
UK /dɪˈfen.sə.bəl/
"defensible" picture
1.

able to be protected against attack

:
The castle was built on a highly defensible hill.
They chose a strategic location that was easily defensible.
2.

able to be justified or supported by argument

:
His actions were not morally defensible.
The company's decision was legally defensible.