a.
1.
Express, direct, explicit, determinate, defined, precise, definite, clear, unequivocal, unmistakable, categorical, expressed, laid down.
2.
Real, actual, veritable, substantial, true, absolute, existing in fact.
3.
Absolute, not relative.
4.
Confident, sure, assured, certain, fully convinced.
5.
Indisputable, decisive, incontrovertible, indubitable.
6.
Decisive, unconditional, imperative.
7.
Dogmatic, stubborn, peremptory, obstinate, over-confident, tenacious, overbearing.