Telephones'
To make "telephone" plural possessive, you would add an apostrophe after the "s" in "telephones" if there is more than one telephone being discussed. For example, "The telephones' cords were tangled."
The plural form of the noun telephone is telephones.The plural possessive form is telephones'.example: All of our telephones' warranties have expired.
Singular possessive: secretary's Plural: secretaries Plural possessive: secretaries'
The plural is relatives. The plural possessive is relatives'.
The plural is lads. The plural possessive is lads'.
The plural form is Mexicans. The plural possessive is Mexicans'.
The plural form is echoes. The plural possessive is echoes'.
The plural form is suffixes. The plural possessive is suffixes'.
The plural form is stepsisters. The plural possessive is stepsisters'.
The plural form is inches. The plural possessive is inches'.
The plural possessive of "Father" is, "Fathers"
Studies' is the plural possessive of study.