The singular is senator and the possessive is senator's (one senator).
The plural is senators and the plural possessive is senators' (referring to more than one senator).
The plural form of "senator" is "senators." The possessive form is "senator's" for singular and "senators'" for plural.
The possessive form of the singular noun senator is senator's.example: The senator's family was a big asset to his campaign.
The possessive form of the singular noun senator is senator's.Example: I got the summer job as a senator's intern.
The plural possessive form of "senators" is "senators'."
The plural possessive form of "voter" is "voters'".
The possessive form for the plural noun citizen is citizens'.
The possessive form of the plural noun dependents is dependents'.
The plural is composers and the plural possessive form is composers' (just an apostrophe added).
The possessive form of "libraries" is "libraries'".
The plural possessive form for comity (one m) is comities'. If you meant the noun committee, the plural possessive form is committees'. If you meant the noun community, the plural possessive form is communities'.
The singular possessive form is heart's; the plural possessive form is hearts'.
The plural form is founders. The plural possessive is founders'.
The singular form of the plural noun 'geese' is goose.The singular possessive form is goose's.
The plural form for the noun sergeant is sergeants; the plural possessive form is sergeants'.
The singular possessive form for the noun knife is knife's.The plural form is knives; the plural possessive form is knives'.
The noun 'sister' is not plural and is not possessive.The plural form is sisters.The possessive form is sister's.The plural possessive form is sisters'.
The plural form of the noun river is rivers.The plural possessive form is rivers'.Example: The Monongahela and Allegheny Rivers' confluence forms the Ohio River.
The singular form is goose; the singular possessive form is goose's.The plural form is geese; the plural possessive form is geese's.