Synonyms of authoritativeness

1 Syllable
lock, trust, cinch, faith, stock
2 Syllables
belief, shoo-in, staunchness, lockup, store, wrap-up, setup, firmness
3 Syllables
dogmatism, certainties, steadiness, sureness, conviction, surety, credence, certainty
4 Syllables
positivism, surefire, validity, certitude, confidence
5 Syllables
positiveness, definiteness
6 Syllables
indubitableness
7 Syllables
inevitability