Add the "s" to make nouns possessive singular.
No matter what the final consonant is, abide by this guideline. So, Charles' friend, wrote
ill will of the witch
The possessive Jesus' and other forms like for conscience' sake and for righteousness' sake are exceptions, as are the possessives of historical proper names ending in -es and -is. However, the rules of Moses and the temple of Isis are frequently substituted for such forms.
There is no apostrophe after the pronominal possessives hers, its, theirs, yours, and ours.
However, the apostrophe is used to denote possession with indefinite pronouns.
the rights of another person's umbrella
It's for its or vice versa is a common mistake. The first phrase is an abbreviation for "it is." A possessive word is the second.
The dog is clever because it scours its own fleas.
Written by: Name Style