There are none in English.
Some words that end in 'ious' are:ambitiousamphibiousanxiousatrociousaudaciousauspiciousbiliousbodaciouscapriciouscautiousceremoniousconscientiousconsciouscontagiouscontentiouscopiouscuriousdeliciousdeliriousdeviousdubiousenviousexpeditiousfacetiousfastidiousfeloniousferociousfictitiousflirtatiousfuriousgloriousgraciousgregariousharmonioushilariousimperiousimperviousimpiousinauspiciousindustriousinfectiousingeniousinjuriousinsidiousjudiciouslaboriouslicentiouslitigiouslusciousluxuriousmaliciousmelodiousmeritoriousmysteriousnefariousnotoriousnoxiousnutritiousobliviousobnoxiousobviousodiousofficiousostentatiousparsimoniouspenuriousperniciouspiousprecariouspreciousprecociousprestigiouspretentiouspreviouspreviousprodigiousrambunctiousrebelliousreligiousrepetitioussalaciousscrumptiousseditiousseriousspaciousspeciousspuriousstudioussuperstitioussurreptitioussuspicioustedioustenaciousvaingloriousvariousvicariousviciousvictoriousvivaciousvoracious
delicious
contagiouscuriousdeliciousenviousfuriousgloriousgraciousgregariousharmonioushilariouslaboriouslusciousluxuriousmaliciousmelodiousnotoriousnutritiousodiousparsimoniousprecariousprestigiouspiouspreciousreligiousserioussalacioussuperstitiousspacioussuspiciousviciousvivacious
conscientiouscuriousdeliciousdeliriousdubiousenviousferociousfuriousgregariousharmonioushilariouslaboriouslusciousobnoxiousobviouspiouspreciousprecociousscrumptioussuperstitiousseriousviciousvictoriousvoluminous
serious amitious curious
There are no common English words that end with -iuos.
words ending in ious: vicious, ambitious, delicious, suspicious, barbarious, adoptous, obvious, tenebrious, voracios, scarios, nonmalatoius, exceptous, luscious ........
"ious" means viruses.
what does the prefix ious mean
The suffix -ious means relation to. This is shown in factious.
I owe you
"Facetious" and "Abstemious". Those two words are also the only words that have all the vowels in them, once and only once, and in order.