uncompromising

English

un- +‎ compromising

uncompromising (comparative more uncompromising, superlative most uncompromising)

Inflexible and unwilling to negotiate or make concessions.
- 1959, Georgette Heyer, chapter 1, in The Unknown Ajax:
  But Richmond, his grandfather's darling, after one thoughtful glance cast under his lashes at that uncompromising countenance appeared to lose himself in his own reflections.
- 2014 November 14, Stephen Halliday, “Scotland 1-0 Republic of Ireland: Maloney the hero”, in The Scotsman‎:
  The visitors, who surprisingly dropped their talismanic record goalscorer Robbie Keane from their starting line-up for a competitive game for the first time in 13 years, adopted a direct and uncompromising approach.
Principled.

inflexible and unwilling to negotiate or make concessions

Catalan: intransigent (ca)
Czech: nekompromisní
Danish: kompromisløs
Dutch: compromisloos (nl)
French: carré (fr) m
German: kompromisslos (de)
Kazakh: бірбеткей (bırbetkei)
Maori: tūkaha
Norwegian:
Bokmål: egen (no), kompromissløs
Polish: bezkompromisowy (pl)
Russian: бескомпроми́ссный (ru) (beskompromíssnyj), непрекло́нный (ru) (nepreklónnyj)
Spanish: inquebrantable (es)
Ukrainian: безкомпромі́сний (uk) (bezkompromísnyj)

principled