The singular noun is man.
Men is plural. One man. Two men.
The word man is the singular noun; the plural noun is men.
The word men is the plural form of the singular noun man.The possessive form of the singular noun man is man's.Examples:The man's hat blew into the street. (the hat of the man, singular)You'll find men's hats on the second floor. (the hats for men, plural)
The singular possessive is tooth's.
The singular form of the word flagella is flagellum.
The word "man" is singular and plural.The term "man" and words derived from it comes from Proto-Germanic language."Man" can indicate all of the human race regardless of their sex or age. However, the term man is a male human used to describe an adult male. So it depends on which context you are using this term "man".Definition of Proto-Germanic: is a common ancestor of all of the Germanic languages which include modern: English, Frisian, Dutch, Afrikaans, German, Danish, Norwegian, Icelandic, Faroese, and Swedish) indicates all of the human race regardless of their sex or age.
Criterion is the singular form of criteria.
The word 'duo' is the singular form; the plural form is duos.
A noun is a person place or thing. Actually men is a Plural noun.
The noun 'men' is a plural, common, concrete noun; a word for a person.The singular form of the noun is 'man'.
The noun 'men' is a plural, common, concrete noun; a word for a person.The singular form of the noun is 'man'.
The singular form of the word "señores" is "señor."