adagio
barrio
nuncio
studio
Also: bagnio, cardio, daimio, pernio, vibrio
Studio
Studio is a 6 letter word ending with io. Additional words include adagio, bagnio, barrio, daimio, nuncio and vibrio.
Agio
Radio
patio, radio, audio
barrio, Coolio, adagio, studio
barrio, studio, Coolio, adagio
studio
Examples of singular nouns ending in -io are:audioimpresariopatioPinocchiopistachiopolioportfolioradioratiotrio
patio. audio. folio. curio. radio. ratio.
If you are referring to the Italian word 'Io' which can be used in the sentence 'Io Sono', Io means I. Io sono means I am.
All I can think of is Ohio Rio