Definitions

1. adjective

resistant or immune to pain

“The painproof material was used to make the safety gear for the stunt performers.”

2. adjective

able to withstand or endure pain

“She proved to be painproof after giving birth to her third child.”

3. noun

a condition of being resistant or immune to pain

“After years of training, she achieved a state of painproof that helped her finish the marathon.”