unyielding - definition and synonyms

adjective 

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/ʌnˈjiːldɪŋ/
  1. 1
    formal very strict and severe

    Her expression was hard and unyielding.

     Synonyms and related words
  2. 2
    mainly literary very hard, or firm

    The ground was unyielding beneath their feet.

     Synonyms and related words