You was originally plural or formal. The singular pronoun for someone you knew well was some form of "thou".
That said, you isn't really "treated as plural". It does take the same verb forms as plural nouns, probably at least partly because of its history.
As a noun, kin is treated as plural.
"All" can be used as a plural or singular noun, depending on the context. When referring to a group or collection as a whole, it is considered singular, but when individual items within the group are being emphasized, it can be treated as plural.
The plural noun is halves.
The plural form for the noun lady is ladies.
The plural is scarves.
As a noun, kin is treated as plural.
Kin is treated as a plural noun
The plural form for the compound noun still life is still lifes.Note: in this compound noun, the noun 'life' is treated as a regular plural.
Yes, the noun 'mumps' is a plural, uncountable noun, a word for an infectious disease.
According to Oxford Dictionary "Government" is a noun treated as singular as well as plural.
The noun 'dirt' is an uncountable noun, a word for a substance; it has no plural form.
"All" can be used as a plural or singular noun, depending on the context. When referring to a group or collection as a whole, it is considered singular, but when individual items within the group are being emphasized, it can be treated as plural.
It's an adjective. It doesn't have a plural form in English. If you use it with a noun, the noun can be plural:creative ideascreative workscreative suggestionscreative peoplecreative solutionsYou might see "creative" treated as a noun in advertising jargon, but it is not standard English.
The noun 'team' is a singular noun. The plural form is teams.
'Gas' can be both singular and plural depending on context. When referring to a substance like oxygen or carbon dioxide, it is often used as a mass noun and is considered singular. When referring to multiple types of gases or quantities of gas, it is treated as a plural noun.
The plural noun is halves.
The plural noun for path is paths. The plural noun for patch is patches.