Inflexible

прилагательное 1) негибкий, негнущийся; жёсткий, несгибаемый, твёрдый Например: knife with an inflexible blade — нож с негнущимся лезвием Синоним(ы): stiff, rigid 2) непоколебимый, непреклонный, упрямый Синоним(ы): unyielding, uncompromising, steadfast, obdurate, adamant 3) негибкий, не допускающий изменений; неизменный Например: The new system is too inflexible. — Новая система слишком негибкая. Синоним(ы): unalterable

Большой англо-русский словарь

Inflexible

adjective Etymology: Middle English, from Latin inflexibilis, from in- + flexibilis flexible 1. rigidly firm in will or purpose; unyielding 2. not readily bent; lacking or deficient in suppleness 3. incapable of change; unalterableinflexibility nouninflexibleness nouninflexibly adverb Synonyms: inflexible, obdurate, adamant mean unwilling to alter a predetermined course or purpose. inflexible implies rigid adherence or even slavish conformity to principle Example: inflexible in their demands. obdurate stresses hardness of heart and insensitivity to appeals for mercy or the influence of divine grace Example: obdurate in his refusal to grant clemency. adamant implies utter immovability in the face of all temptation or entreaty Example: adamant that the work should continue. Synonym: see in addition stiff.

Merriam-Webster's Collegiate Dictionary