There are two accepted forms for possessive singular nouns ending in s:
Add an apostrophe (') after the existing s at the end of the word:
cross'
Add an apostrophe s ('s) after the existing s at the end of the word:
cross's
Examples:
The cross' damage was repaired in time for the ceremony.
The cross's damage was repaired in time for the ceremony.
The singular noun is cross; the singular possessive is cross's.The plural noun is crosses; the plural possessive is crosses'.
The singular possessive form of the word "cross" is "cross's." This indicates ownership or association, as in "the cross's design" or "the cross's significance." In some cases, people may also use "cross'" for stylistic reasons, but "cross's" is the standard form.
The singular possessive form of "test" is "test's".
The singular possessive pronouns are mine, yours, his, hers, and its. The singular possessive adjectives are my, your, his, her, and its.
The singular possessive is ant's.The plural possessive is ants'.
Museum is singular. Museum's is singular possessive. Museums is plural. Museums' is plural possessive.
The singular possessive form is classmate's.
The singular possessive of dish is dish's
Taco's is the singular possessive.
The singular possessive is biker's; the plural possessive is bikers'.
The singular possessive is fish's.
Grave's is the singular possessive.