'Parishion' is an obsolete word, but does qualify. It means the same as parishioner.
Three letter words ending with I are:chikoileiobipoiski
Three words match:HajRajTaj
Three letter words ending in -s are:YesBusAdsCosHasHisInsSisSosWas
Some three letter words ending in Y are:anybaybuycaycoycrydaydryfryflygayguyhayheyjayjoykeylaymaypayraysaysoyshyslyspystywaywhywry
fashion
Some words ending with the suffix "shion" are "fashion," "passion," and "cushion."
cushion, pincushion, fashion
'Parishion' is an obsolete word, but does qualify. It means the same as parishioner.
Cushion, fashion and pincushion are words. They end with the letters SHION.
Some English words that end with -shion include fashion, cushion, and passion.
Three letter words ending with I are:chikoileiobipoiski
Three words match:HajRajTaj
None. If you don't mean Shion (a proper name) and instead mean "words ending in the shion sound, that's a different story. However, it would depend on what word ending in that sound you are asking about. Fashion, for example, does not rhyme with locomotion; however, both have the same ending shion sound.
Three letter words ending in -s are:YesBusAdsCosHasHisInsSisSosWas
Sky Chord by Shion Tsuji
Some three letter words ending in Y are:anybaybuycaycoycrydaydryfryflygayguyhayheyjayjoykeylaymaypayraysaysoyshyslyspystywaywhywry