Progeny is used in both the singular or plural.
The plural of progeny can be progeny or progenies.Like "offspring" progeny can refer to one person (child) or several (children).
Offspring refers to the young or progeny of an organism.
That is the correct spelling of the plural noun "descendants" (offspring, progeny).
There is no plural form. Do and Do not are verbs
The plural form of him, her, or it is them. (objective pronouns)
Bridges is the plural form of bridge.
The plural form of "was" is "were."
The plural form of "I" is "we."
The plural form of "is" is "are."
The plural form of mouth is mouths. The plural form of month is months. The Mounth is a range of hills in Scotland and does not have a plural form.
"Groceries" is the plural form of "grocery."
"Beliefs" does not have a plural form, as it is already plural. Beliefs is the plural form of belief.