English edit

Etymology edit

undeterrable +‎ -ly

Adverb edit

undeterrably (comparative more undeterrably, superlative most undeterrably)

  1. In a way that cannot be deterred; with unshakable determination.
    • 1953, Colwyn Edward Vulliamy, The Onslow family, 1528-1874, page 97:
      In the House, majestically robed and occupying the central position in his Baroque Chair, he presided over the assembly as a priest would have presided over the holiest of rituals, undeterrably exact and of unshaken stateliness.