The possessive form of the plural noun trustees is trustees'.
Trustees is the plural of trustee. "The trustees had no idea where the money went"
Singular possessive: secretary's Plural: secretaries Plural possessive: secretaries'
The noun 'money' is a singular uncountable noun as a word for currency or coins.The plural noun 'monies' is used almost exclusively in formal business contexts. The noun 'monies' is an uncountable plural noun.The plural possessive form is monies'.Example: The monies' security has been the responsibility of the trustees.
The plural is lads. The plural possessive is lads'.
The plural is relatives. The plural possessive is relatives'.
The plural form is suffixes. The plural possessive is suffixes'.
The plural form is stepsisters. The plural possessive is stepsisters'.
The plural form is Mexicans. The plural possessive is Mexicans'.
The plural form is echoes. The plural possessive is echoes'.
The plural form is inches. The plural possessive is inches'.
Studies' is the plural possessive of study.
The plural possessive is pals'.