The possessive form for the noun swimmer is swimmer's.
example: The swimmer's time has improved over the season.
The word swimming is a gerund; gerunds have no plural form.
The noun form is swimmer. The plural form is swimmers.
The plural possessive form is swimmers'.
Example: The swimmers' trials are scheduled for Friday afternoon.
The possessive form for the plural noun swimmers is swimmers'.
Example: The pooll is closed for the swimmers' training on Tuesdays.
The possessive form for the noun swimmer is swimmer's.
example: The swimmer's time has improved over the season.
The possessive form for the noun swimmer is swimmer's.
The possessive form of the plural noun swimmers is swimmers' (add an apostrophe to the end of a plural noun that ends with s).Example: The swimmers' lanes are assigned by lottery.
The possessive form of the plural noun swimmers is swimmers' (add an apostrophe to the end of a plural noun that ends with s).Example: The swimmers' lanes are assigned by lottery.
The singular possessive form is word's, for example the word's definition.
possessive form of the word Cathi: Cathi's
possessive form of the word glass: glass'
possessive form of the word Congress: Congress'
possessive form for the word holders: holders'
the possessive form of the word Cathie: Cathie's
The possessive form of the word dictionary is dictionary's.
The possessive form of the word fairy is fairy's.
The possessive form is Lindbergh's.
The possessive form is weaver's.