Origin: Latin suffix -ous
Dubious has 4 different meanings across 1 category:
open to doubt or suspicion
"the candidate's doubtful past"
"he has a dubious record indeed"
"what one found uncertain the other found dubious or downright false"
"it was more than dubitable whether the friend was as influential as she thought"
Arousing doubt; questionable; open to suspicion.
"The witness gave a dubious account of what he saw, making it hard for anyone to trust his story."