ŏpīnĭōsus, a, um, adj. [opinio],
fixed or set in opinion (rare): Antipater et Archidemus opiniosissimi homines, * Cic. Ac. 2 ( Luc. ), 47, 143 dub.; Tert. adv. Marc. 4, 35.
(opīniōsus) adj. opinio, full of hypotheses . —Only sup: opiniosissimi homines (dub.). ...
An Elementary Latin Dictionary