
In most cases to make a word plural you simply add an "s" or "es". There are, however, some exceptions. The plurals of certain words are more unusual and may not be as easy to predict.
Do you know how to spell the plural forms of the most challenging words? Take this quiz to see if you can score full marks. The results may surprise you.
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Get PremiumPlural Quiz 📚! Can You Name These English Plurals? Questions
Let's start with an easy one. What is the plural of the word “child”?

childen
child
children
childs
What is the plural of the word “knife”?

Knifes
Knives
Knife
What is the plural of the word “elf”?

elve
elfs
elves
What is the plural of the word “foot”?

foot
feet
foots
feets
What is the plural of the word “formula”?

formulas
formulae
formuli
formulaes
What is the plural of the word “crisis”?

Crisises
Crisis
Crises
What is the plural of the word “criterion”?

Criterions
Criteria
Criterii
Criterias
What is the plural of the word “deer”?

Doe
Deers
Deer
Dear
What is the plural of the word “emphasis”?

Emphasises
Emphases
Emphasis
What is the plural of the word “oasis”?

Oasises
Oasea
Oases
What is the plural of the word “ox”? (animal)

Ox
Oxen
Oxes
What is the plural of the word “nucleus”?

Nuclii
Nuclei
Nucleuses
Nuclea
What is the plural of the word “roof”?

Roofes
Roofs
Rooves
What is the plural of the word “moose”?

Moose
Mooses
Meese
What is the plural of the word “larva”?

Larvae
Larvas
Larvi
What is the plural of the word "phenomenon"?

Phenomenas
Phenomena
Phenomenons
What is the plural of the word “genius”?

Geniuie
Genius
Geniuses
What is the plural of the word “radius”?

Radiae
Radii
Radae
Radiuses
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