inflexible

/(ˌ)in-ˈflek-sə-bəl/

Middle English, from Latin inflexibilis, from in- + flexibilis flexible

adjective

  1. not flexible: such as

  2. characterized by firmness of will or purpose : unyielding

  3. not easily bent or twisted : lacking or deficient in suppleness

an inflexible judge

inflexible obdurate adamant mean unwilling to alter a predetermined course or purpose. inflexible implies rigid adherence or even servile conformity to principle. obdurate stresses hardness of heart and insensitivity to appeals for mercy or the influence of divine grace.