The plural form of eight is eights.
Example: there are a lot of eights in the number 482,886,808.
Just the plural form of the word "eight"? It would be "eights", but I'm not entirely sure that's what you meant.
The possessive form of the plural noun musicians is musicians'.example: The musicians' rehearsal is scheduled for eight.
The noun 'proof' is an uncountable noun except as a word for a printing proof or a photographic proof.The plural form of the noun 'proof' is proofs.The plural possessive form is proofs'.Example: the proofs' printout is eight pages.
Bridges is the plural form of bridge.
"Beliefs" does not have a plural form, as it is already plural. Beliefs is the plural form of belief.
There is no plural form for the word, countries. This word itself is a plural.
"Groceries" is the plural form of "grocery."
The plural form of "meter" is "meters."
It has no plural form.
The plural form for the noun sergeant is sergeants; the plural possessive form is sergeants'.
The plural form of rung is rungs.
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.