the.com/plural

One was never enough, so grammar invented a way to admit it.

means The grammatical form of a word that refers to more than one of something, as opposed to the singular.

from From Latin pluralis, 'of or belonging to more than one,' built on plus (genitive pluris), meaning 'more.' It traveled into English through Old French plurel, and that same Latin plus still surfaces in everyday words like plus, surplus, and plenty — all quietly insisting that more exists.

weird forms
Ox becomes oxen; box stays defiantly boxes
latin ghosts
Cactus, cacti; octopus prefers octopuses, not octopi
zero count
Many languages skip plurals entirely, using context instead
royal we
Monarchs pluralize themselves to sound bigger than one
sheep problem
Some words refuse to change for any number
the.com · every word