The plural noun for a ball used to play Basketball is basketballs.
The noun 'basketball' as a word for the game or sport is a non-count noun.
The plural form of basket is baskets.
Singular. Plural is: they are, have and do.
Derogatory is an adjective, and has no plural forms.
There are two accepted forms of the noun: adviser and advisor.The plural forms are advisers and advisors.
The plural forms of the noun executrix are executrices or executrixes, both forms are accepted.
basketballs
The plural form of basket is baskets.
There are two accepted forms of the noun: adviser and advisor.The plural forms are advisers and advisors.The plural possessive forms are advisers' and advisors'.
Singular.
Verbs don't have plural forms.
plural forms are uteri or uteruses.
Singular
There are two accepted plural forms of the noun vertex: vertices and vertexes.The plural possessive forms are vertices' and vertexes'.
The plural forms thesauruses and thesauri are both acceptable forms of the word thesaurus.
There are two accepted plural forms for the noun cargo, they are cargoes and cargos.The plural possessive forms are cargoes' and cargos'.
The plural forms for the singular lumen is lumina or lumens, both are accepted plural forms.
Singular. Plural is: they are, have and do.