inelastic

adjective3

1. •
   Lacking elasticity; inflexible, unyielding.

   • He spoke languidly, and only those few words, like a watch with an inelastic spring, that just ticks a moment or two and stops again. — 1852
2. •
   Insensitive to changes in price.

   • A different approach is needed now, as there is more discretionary travel which, unlike the use of season tickets, does not have inelastic demand characteristics. — 2023
3. •
   (US) Resistant to swings during elections; predictable.