The plural of tooth is teeth.
➡️ Every two weeks, sharks grow a new set of teeth to replace the worn ones.
➡️I told my dentist that my teeth were getting yellow.
There are some words that cannot be made plural by adding S to the end but they can be made plural by changing their form.
Example – Tooth becomes teeth, foot becomes feet, mouse becomes mice. etc.
Read more – 20 Examples of Pronouns in a Sentence
A few rules of plural formation
There are many rules for plural nouns in English. Below are some standard rules and examples of plural formation.
| Type | Examples | Forming the plural | Plural |
|---|---|---|---|
| Most noun | ☑️ Ball ☑️ Bat ☑️ Dog | Add S | ✅ Balls ✅ Bats ✅ Dogs |
| Noun ending s, sh, ch, x or z | ☑️ Box ☑️ Fox ☑️ Dress | Add es | ✅ Boxes ✅ Foxes ✅ Dresses |
| Nouns ending if, ief, eef, oof or rf | ☑️ Belief ☑️ Chief ☑️ Hoof | Add S | ✅ Beliefs ✅ Chiefs ✅ Hoofs |
| Exception | ☑️ Foot ☑️ Tooth ☑️ Goose | Some nouns have to be plural by changing the vowel in the middle | ✅ Feet ✅ Teeth ✅ Geese |
| Noun ending O and If there is a consonant before o | ☑️ Canto ☑️ Piano ☑️ Photo | Add S | ✅ Cantos ✅ Pianos ✅ Photos |
| Singular Noun ending Y and If there is a consonant before Y | ☑️ Baby ☑️ Lady ☑️ Body | y is to be replaced by i and es at the end | ✅ Babies ✅ Ladies ✅ Bodies |
| Singular Noun ending Y and If there is a vowel before Y | ☑️ Day ☑️ Toy ☑️ Play | Add S | ✅ Days ✅ Toys ✅ Plays |
| Singular noun ending F or Fe | ☑️ Calf ☑️ Life ☑️ Thief | F or Fe is to be replaced by V and es at the end | ✅ Calves ✅ Lives ✅ Thieves |
Read more – Subject and object pronouns : Definition and Examples
Why the confusion with the plural of tooth?
There is some difference in the plural structure of the tooth because its plural is not formed by adding S but by changing its inner vowel. There are no specific rules for remembering them. These have to be memorized.
So friends stayed until today. I will come to you soon with another article. She'll be fine until then. Thanks.
Read more – 20 Examples of Personal Pronouns in a sentence
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