chairwomen
Traditionally, "chairwomen". Sometimes now, simply "chair" with plural "chairs" is preferred over both chairman and chairwoman.
In English there are no masculine or feminine forms. English uses gender specific nouns for a male or a female. The noun for a male is chairman; the noun for a female is chairwoman. However, the common gender form, chairperson, is becoming more frequently used.
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.
"Chairwoman" is a noun that functions as a subject complement. It renames or provides more information about the subject in a sentence, typically following a linking verb like "is." For example, in the sentence "She is the chairwoman," "chairwoman" identifies the subject "she."
The plural form of "is" is "are."
The plural form of "was" is "were."
The plural form of "I" is "we."
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.