-sion

a noun suffix appearing in loanwords from Latin: compulsion.
Compare -tion.

Origin of -sion

< Latin, equivalent to -s(us), variant of -tus past participle suffix + -iōn- -ion

Words nearby -sion

-sexual, -shaped, -sharing, -ship, -sided, -sion, -sis, -sol, -soma, -some, -something