Your current location:

Unit 27: Spelling the endings -able and -ible

Page 8 of 11

Unit 27: Word endings: -able, -ible

Unit StartCourse Testpage 2Course Testpage 4page 5Course Testpage 7page 8Course Testpage 10page 11Unit End

Page 8 of 11

Adding the suffixes -able and -ible: do the root words change?

The suffixes -able and -ible, change verbs to adjectives:

Love Loveable I love that cat. He is loveable.
Digest Digestible I digest my food. It is digestible.

Teaching point 1. Usually, if the root word ends in e, you can drop the e because -able and -ible provide the vowel:
excuse + able = excusable
sense + ible = sensible

2. If -able is added to a word ending -ce or -ge, keep the e otherwise the c and the g take on their hard sounds:

notice + able = noticeable
change + able = changeable

3. Often, when applying -able, and we can hear a full root word, the root word stays the same:

depend + able – dependable
understand + able = understandable
enjoy + able = enjoyable

4. If the syllable before the suffix is stressed, and you can hear a clear short vowel sound in that syllable, you may need to double the final consonant of the root word:

forget + able = forgettable
admit + ible = admissible

5. If the root word ends in y, you may have to change it to an i before adding the suffix:

rely + able = reliable

next part of the spelling course
Go to next page:
Test yourself on the suffix rules for -able and -ible.

X
X
Please turn your screen to landscape to play this game.
X

The Spellzone interactive course is intended to be used online and may not be printed.

Sign up to remove this advert

"Thank goodness for Spellzone during this remote learning phase. The site is easy for students to navigate independently and they're really enjoying the activities and spelling games. You get an awful lot for your money with Spellzone. Really reassuring is the very prompt response with helpdesk queries. I've very rarely needed the helpdesk, but when I have, the issue has been addressed and sorted within a very short time."

Sarah Taggart, Oasis Academy Lord's Hill