What is the singular possessive and plural possessive of "waitress"?
Singular possessive: waitress's. Plural possessive: waitresses'
Generally, getting the singular possessive form of a word entails adding " 's " to the end of the word. Common nouns such as waitress follow this rule.
The plural possessive of common nouns requires getting the plural form of the word and adding an apostrophe ('), but no "s" will follow the apostrophe as with the singular possessive.