inflexible

adjective

1. 1

   resistant to being bent

   an inflexible iron bar

   an inflexible knife blade

2. 2

   incapable of change

   a man of inflexible purpose

3. 3

   not making concessions

   took an uncompromising stance in the peace talks

   uncompromising honesty

4. 4

   incapable of adapting or changing to meet circumstances

   a rigid disciplinarian

   an inflexible law