Just add an s = households.
The word household is a noun. The plural is households.
A pater familias (father of the family) was the head of the family/household. The plural is patres familias.
Cnēoris -feminine word, has to be conjugated for case and voice. nominative: Cnēoris (singular), Cnēorissa (plural) accusative: Cnēorisse (singular), Cnēorissa (plural genitive: Cnēorisse (singular), Cnēorissa (plural) dative: Cnēorisse (singular), Cnēorisum (plural) requires correctly conjugated definite article or pronoun proceeding it in a sentence.
To indicate singular possession:Mr. McCoy's booksJim James's socksTo indicate plural possession:The James' household
An oikos (ancient Greek: οἶκος, plural: οἶκοι, English prefix: Eco for Ecology and Economics) is the ancient Greek equivalent of a household, house, or family
The scientific name for lips is "labium" in singular form and "labia" in plural form.
Radios
In the Latin some of us learned in school, familias is the accusative plural form of the word familia, which means "household" or "family." (The accusative is the form used for the object of a verb or of certain prepositions.)Familias is also a form, already old-fashioned in classical times, of the genitive singular of familia (thus "of the household/family"), and this is its meaning in the common Latin compound word paterfamilias, literally "father of the household."
The plural of "she" is "they", so the plural of "she had" is "they had".
The plural of 'this' is 'these' and the plural of 'that' is 'those'.
Isthmi is plural. There are actually two plural forms. I will list them from singular to plural. Isthmus - Singular Isthmi - Plural Isthmuses - Plural
The plural of rose is roses. The plural possessive is roses'.