Graffiti's. "Graffiti" is a noncount noun, also called a mass noun. There is no plural form, just like "water". The possessive is created by adding apostrophe "s".
The plural form of the noun artist is artists.The plural possessive form is artists'.example: The artists' colony was a lovely estate in the country.
graffitoThe word graffiti is a plural noun in Italian. In English graffiti is far more common than the singular form graffito.When the reference is to a particular inscription (as in There was a bold graffiti on the wall), the form graffito would be etymologically correct.
The plural form for the noun artist is artists.The plural possessive form is artists'.Example: All of the artists' works will remain on display until the end of the month.
The plural form of the noun artist is artists.The plural possessive form is artists'.Examples: The upcoming artists' works will be displayed for the rest of the month.
The plural form of the noun artist is artists.The plural possessive form is artists' materials.
The singular possessive form is heart's; the plural possessive form is hearts'.
The plural form is founders. The plural possessive is founders'.
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 singular form is goose; the singular possessive form is goose's.The plural form is geese; the plural possessive form is geese's.
The plural possessive form of "cherubim" is "cherubim's."
The plural possessive form of "reply" is "replies'".
The plural form is valleys. The plural possessive is valleys'.
The plural form is squirrels. The plural possessive is squirrels'.
The plural form is cockroaches; the plural possessive form is cockroaches'.
The plural form is treasurers. The plural possessive is treasurers'.