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(ordered by seriousness) Top Tip
Get a grammar checker
for your browser ESL Vocabulary Lists Parts of Speech Lists Tests and Games Awkward Plurals Sayings and Proverbs Twitter YouTube
Plural of Tooth
The Quick Answer
The plural of tooth is teeth.The Plural of Tooth
The plural of tooth is teeth.- Sharks grow a new set of teeth every two weeks to replace worn teeth.
- I told my dentist my teeth are going yellow. he told me to wear a brown tie. (Rodney Dangerfield)

Are You Good at Plurals?
Here's a quick test.The Standard Rules for Forming the Plurals
The table below shows the standard rules for forming the plurals of nouns in English.Type | Example of Type | Forming the Plural | Plural |
---|---|---|---|
Most Nouns | ![]() ![]() |
add s | ![]() ![]() |
Noun Ending s, sh, ch, x or z | ![]() ![]() |
add es | ![]() ![]() |
Nouns ending [consonant] o | ![]() ![]() ![]() |
add either s or es (There are no rules for this - you have to know.) |
![]() ![]() ![]() |
Nouns ending [vowel] o | ![]() ![]() |
add s | ![]() ![]() |
Nouns ending [consonant] y | ![]() ![]() |
change the y to an i and add es | ![]() ![]() |
Nouns ending [vowel] y | ![]() ![]() ![]() |
add s | ![]() ![]() |
Nouns ending f or fe | ![]() ![]() |
ves and/or s (There are no rules - you have to know.) |
![]() ![]() |
Exceptions | ![]() ![]() |
some nouns undergo a vowel or letters change | ![]() ![]() |
More exceptions | ![]() ![]() |
some nouns do not change at all | ![]() ![]() |
Why Is There Confusion over the Plural of Tooth?
There is confusion because the plural of tooth is not formed by adding 's' but by changing its central vowel. Several other words form their plurals in this way. There is no rule to remember them. They have to be memorized.Ready for the Test?
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