unwavering

Adjective

unwavering (comparative more unwavering, superlative most unwavering)

1. Always on course and steady.
   • And on this occasion she [Lady Mary, later Mary I of England] wrote the king a letter (which these noblemen seem to be the carriers of) chiefly to shew how unwavering she continued in her formerly declared purpose about religion; […]1721, John Strype, “The Lady Mary’s Concern with the King and Council, for Retaining Mass in Her Family. […]”, in Ecclesiastical Memorials; Relating Chiefly to Religion, and Its Reformation, under...
   • [B]y that winding passage, to that bower / I now will go—all objects there will teach me / Unwavering love, and singleness of heart.[1800?], S[amuel] T[aylor] Coleridge, “The Night-scene: A Dramatic Fragment”, in Sibylline Leaves: A Collection of Poems, London: Rest Fenner, […], published 1817, →OCLC, page 140

   Synonyms:

   constant, nonwavering, staunch, steadfast, strong-handed, tough-minded, unshakable, unshaking

   Antonyms:

   wavering

2. Not doubting or unsure; decisive, firm, resolute.
   • For, foraſmuch as Faith properly ſo called is nothing but an unvvavering Aſſent to ſome Doctrine propoſed upon the ground of infallible Teſtimony, there muſt be ſome Reaſon to perſuade us that that Teſtimony is infallible; […]1713, Franciscus Euistor the Palæopolite [pseudonym; Henry More], “A Brief Discourse of the True Grounds of the Certainty of Faith in Points of Religion”, in Divine Dialogues, Containing Sundry...

   Synonyms:

   certain, sure, assured, clear, confident, definite, doubtless, positive, sicker, unambiguous

   Antonyms:

   indecisive, in two minds, irresolute, of two minds, uncertain, undecided, vacillating, wavering