In the English language, there are exceptions to every rule.
Some of the most maddening exceptions occur with spelling rules. For instance, it’s “i before e except after c”—unless it’s the fourth Thursday and there’s a full moon, right?
So, let’s look at “weird” plurals. And I say “weird” because pluralization is not always about adding an “s.”
With the singular form listed first, here are some words you can’t make plural just by adding an “s”:
• syllabus
• syllabi
• diagnosis
• diagnoses
• radius
• radii
• stratum
• strati
• nucleus
• nuclei
• focus
• foci
• fungus
• fungi
• crisis
• crises
• criterion
• criteria
• index
• indices
• appendix
• appendices
• ox
• oxen
• schema
• schemata
• seraph
• seraphim
• tableau
• tableaux
• die
• dice
Other words simply break the rules. For example, words ending in “o” are generally made plural by adding an “es,” such as potato/potatoes. But what about:
• memo
• memos
• cello
• cellos
Or how about:
• knife
• knives
• roof
• roofs
Or even:
• goose
• geese
• mongoose
• mongooses
And:
• man
• men
• woman
• women
• human
• humans
Then there are the words that are spelled the same in both the singular and plural form:
• deer
• moose
• sheep
• kudos
• premises
• shambles
And of course, there are words that are plural with no singular forms:
• alms
• amends
• doldrums
• pliers
• scissors
• shorts
• smithereens
• trousers
Readers, any other “weird plurals” to share?
A version of this article first appeared on Ragan Communication’s PR Daily.