indubious
I
adjective
absolute, ascertained, assured, attested, certain, confident, convinced, definite, demonstrable, demonstrated, doubtless, factual, foolproof, guaranteed, incontestable, irrefutable, official, past dispute, positive, safe, satisfied, sure, tested, tried, uncontested, undeniable, undoubtful, unequivocal, unshakable, verifiable, without doubt, without question
II
index
axiomatic, decisive, definite, incontestable, incontrovertible, irrefutable, uncontroverted
Burton's Legal Thesaurus.
William C. Burton.
2006