incapable of adapting or changing to meet circumstances
incapable of compromise or flexibility
incapable of or resistant to bending
fixed and unmoving
designating an airship or dirigible having a form maintained by a stiff unyielding frame or structure
able to adjust readily to different conditions
able to flex; able to bend easily
bending and snapping back readily without breaking
making or willing to make concessions
capable of being changed