-tious

a suffix originally occurring in adjectives borrowed from Latin (fictitious); on this model, used with stems of other origin (bumptious).
Also -ious, -ous.

Origin of -tious

< Latin -tiōsus, equivalent to -t(us) past participle suffix + -iōsus -ious

Words nearby -tious

-thermy, -thon, -thymia, -tic, -tion, -tious, -to-be, -tome, -tomous, -tomy, -ton