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When to use -able and -ible?

Average: 4 (46 votes)

This lesson tests both your vocabulary and your spelling. All the stems (the starts of words) below can have '-able' or '-ible' added to them. Can you decide whether they need able or ible? Once you have decided, try to match the word to the correct sentence. Good luck and let us know how you get on.

-able and -ible are both suffixes, groups of letters that are added to a word to change its meaning or use. When -able and -ible are added to words it generally means 'capable of being' e.g. Enjoyable: can enjoy.


-able When the root word looks like a whole word then you should be able to add able:

Enjoy + able = Enjoyable

When the stem word ends with 'e', drop the 'e' and add '-able'.

Value + able = Valuable


-ible when the full root word is not a whole word you can add ible.

Ed + ible = Edible

Because English has plenty of irregular words, sometimes this 'drop the e rule' does not apply. All you can do is try to remember the irregular words. Many of them have a c or g before the e e.g. noticeable, changeable.

Stem Words


Use -ible or -able with a root word to complete each sentence. Only use each stem word once:

  • 1. I am for these children so I must take good care of them.
  • 2. Those berries are not , don't go near them!
  • 3. The date was awful, our personalities were not at all!
  • 4. You are so I knew you'd choose the chocolate!
  • 5. This bed is really . I think I'll buy it.
  • 6. It is really important that our cafe is so our elderly customerscan move around easily.
  • 7. Is it to get to the town by bus?
  • 8. I felt completely , no one talked to me the whole night.
  • 9. Those handbags are expensive but very , everybody wants one.
  • 10. Oh that kitten is ! Can we get one?


All correct!

Thanks for lesson!

In Stem words Adorable___ word should be changed to Ador_____


Thanks, it's fixed now.



Very interesting lesson.I did not understand meaning of #2 . Thanks.

Inedible = cannot eat

Berries are a fruit (e.g strawberries). When something is inedible, it means we cannot eat it. Sentence two is a warning!

Thank you

Thank you

Fantastic..i love to go

Fantastic..i love to go ahead with many like this...zahi

easy ^^

easy ^^

Thanks for lesson

Thanks for lesson

Access is a full word. Why

Access is a full word. Why accessIBLE?

Access is actually broken up

Access is actually broken up into the prefix ac- and the root cess. When you look at the word to choose -able vs -ible, you want to look at the root. The root is not a full word, therefore you use -ible.

Response is another full

Response is another full word. Why responsible

Response is actually broken

Response is actually broken down with re- as the prefix and spons as the root. When choosing -able vs. -ible, you need to look at the root. Since spons is not a full word, you need to use -ible.

When to use able and ible

Thanks for Lesson very nice.

Thanks for Lesson very

Thanks for Lesson very much

Best Regards