unbendable
/ʌnˈbɛndəbəl/
adjective
- Not able to be bent; physically rigid or inflexible.
- This plastic becomes unbendable when it freezes.
- The unbendable steel rod supported the heavy shelf.
- He tried to shape the unbendable wire but it wouldn't budge.
- Not willing to change one's opinion, decision, or behavior; stubborn or unyielding.
- The negotiator faced an unbendable opponent who refused any compromise.
- His unbendable rule was to never eat dessert before dinner.
- Her unbendable determination helped her finish the marathon.