-ment /mənt/ BrE AmE suffix [in nouns]
[ Language: Old French ; Origin: Latin -mentum ]
used to form a noun from a verb to show actions, the people who do them, or their results:
the government (=the people who govern a country)
the replacement of something (=the action of replacing something)
some interesting new developments
—-mental /mentl/ suffix [in adjectives] :
governmental