Synonyms for Cavity (With Meanings and Examples for 2026)

Have you ever gone to the dentist and heard the words, “You have a cavity”? It can feel scary. Your heart drops. You start thinking about drills and fillings.

Last year, my friend ignored a small tooth problem. He said it was just a tiny hole. But that “tiny hole” turned into a painful dental cavity. If he had understood what a cavity really meant, he would have acted sooner.

A cavity is a small hole or empty space. Most often, it means a hole in a tooth caused by decay. In simple English:

Knowing different synonyms for cavity helps students, bloggers, and writers avoid repeating the same word again and again. It makes your writing richer and more natural.

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1. Hole

Meaning: A small empty space in something solid.

Examples

• The dentist found a hole in my tooth.
• There is a hole in the wall.

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2. Hollow

Meaning: An empty space inside something.

Examples

• The tree has a hollow in its trunk.
• The doctor cleaned the hollow in the tooth.

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3. Pit

Meaning: A small deep hole in a surface.

Examples

• The apple had a small pit.
• A pit formed in his tooth.

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4. Crater

Meaning: A large round hole.

Examples

• The volcano left a crater.
• The decay made a crater in the tooth.

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5. Gap

Meaning: An open space between things.

Examples

• There is a gap between the teeth.
• The wall has a small gap.

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6. Opening

Meaning: A space that allows entry.

Examples

• The cave has a narrow opening.
• The dentist checked the opening in the tooth.

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7. Void

Meaning: An empty space.

Examples

• The box had a void inside.
• The cavity created a void in the enamel.

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8. Pocket

Meaning: A small hollow space.

Examples

• Air formed a pocket under the surface.
• The infection caused a pocket in the gum.

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9. Dent

Meaning: A small hollow mark.

Examples

• The car has a dent.
• Sugar can cause a dent in enamel.

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10. Depression

Meaning: A sunken area.

Examples

• There is a depression in the ground.
• The tooth shows a small depression.

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11. Socket

Meaning: A hollow place where something fits.

Examples

• The bulb fits into the socket.
• The tooth sits in a socket in the jaw.

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12. Chamber

Meaning: An enclosed space.

Examples

• The heart has four chambers.
• The tooth pulp is inside a small chamber.

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13. Crevice

Meaning: A narrow crack or opening.

Examples

• Water filled the crevice.
• Food got stuck in a crevice of the tooth.

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14. Cleft

Meaning: A split or opening.

Examples

• The rock has a deep cleft.
• A cleft formed in the enamel.

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15. Fissure

Meaning: A long narrow crack.

Examples

• The earth has deep fissures.
• Cavities often start in tooth fissures.

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16. Perforation

Meaning: A hole made through something.

Examples

• The paper has a small perforation.
• The decay caused perforation in the tooth.

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17. Burrow

Meaning: A hole made by an animal.

Examples

• The rabbit dug a burrow.
• The decay burrowed into the tooth.

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18. Tunnel

Meaning: A long hole through something.

Examples

• Cars drive through a tunnel.
• The bacteria created a tunnel in the tooth.

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19. Recess

Meaning: A small space set back.

Examples

• The statue stands in a recess.
• The cavity formed in a recess of the molar.

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20. Indentation

Meaning: A small hollow mark.

Examples

• The clay has an indentation.
• The tooth shows a deep indentation.

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21. Slot

Meaning: A narrow opening.

Examples

• Put the coin in the slot.
• The tooth has a small slot-like cavity.

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22. Crack

Meaning: A narrow break or split.

Examples

• The glass has a crack.
• A crack in the tooth led to a cavity.

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23. Aperture

Meaning: An opening or hole.

Examples

• The camera lens has an aperture.
• The tooth enamel showed a tiny aperture.

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24. Hollow space

Meaning: An empty area inside something.

Examples

• The rock has a hollow space.
• The dentist filled the hollow space.

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25. Divot

Meaning: A small piece removed, leaving a hole.

Examples

• The golf club made a divot.
• The decay created a small divot in the tooth.

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26. Sinkhole

Meaning: A large hole in the ground.

Examples

• The road collapsed into a sinkhole.
• Severe decay can look like a sinkhole.

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27. Alveolus

Meaning: A small cavity in the body.

Examples

• The lungs contain alveoli.
• The tooth root sits in an alveolus.

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28. Cell

Meaning: A small enclosed space.

Examples

• Bees live in honeycomb cells.
• The pulp is inside a small cell-like cavity.

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29. Cavern

Meaning: A large hollow space.

Examples

• The explorers found a cavern.
• The untreated cavity became a large cavern in the tooth.

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30. Pocket hole

Meaning: A small hidden hole.

Examples

• The wood has a pocket hole.
• A pocket hole formed between the teeth.

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Conclusion

In conclusion, understanding Synonyms for Cavity helps improve both your vocabulary and writing clarity. If you are describing a dental issue, a hollow space, or a gap inside something, using the right alternative word makes your content more precise and engaging. Words like “hole,” “hollow,” “pit,” “crater,” and “void” can replace “cavity” depending on the context.

Choosing accurate synonyms not only strengthens your communication but also enhances SEO performance when writing online content. By learning and using different synonyms for cavity, you make your language more dynamic, professional, and reader-friendly. Expanding your vocabulary in this way allows you to express ideas more effectively and confidently in any type of writing.