As GO is a word referring to the game, so its plural gos is.
Many other revelations followed, including the most notorious of all: the one advocating “plural marriage,” or polygamy.
And the plural could be knaidels, or knaidelach, or knaidlach, or knaideluch.
Illuminati is the plural of illuminatus, which means “enlightened.”
Actually, the issue of plural vs. singular is orthogonal to the dilemma she wants to pose.
With the exception of the "abstract" prefix Bu (No. 14), no singular prefix can be used as a plural nor vice versa.
Obulus, (plural Oboli)—A small coin, about the value of a penny.
Does he always speak of himself in the plural, like a king, or a reviewer?
It existed but in two, and in one of these there was a plural executive.
One of its doctrines, indeed, the preference of a plural over a singular executive, will probably not be assented to here.
late 14c., from Old French plurel "more than one" (12c., Modern French pluriel), from Latin pluralis "of or belonging to more than one," from plus (genitive pluris) "more" (see plus). The noun meaning "a plural number" is from late 14c.
The grammatical category in nouns, pronouns, and verbs that refers to more than one thing. Most nouns become plural with the addition of -s or -es: hats, chairs, dishes, countries, and so on. Some nouns form the plural in other ways, as in children, feet, geese, and women. (Compare singular; see agreement.)