A few words drop their final
e
when adding
-able.
Fortunately, there aren't many of these! There are many more examples of the
retention of the final
e.
|
Some exceptions to the rules:
|
-
advisable
-
desirable
-
valuable
|
-
debatable
-
changeable
-
noticeable
|
|
-
contemptible
-
digestible
-
flexible
|
-
responsible
-
irritable
-
inevitable
|
|
More Exceptions:
|
Only
-able
follows
g,
i,
and the hard
k
sound.
|
The suffix
-ible
is commonly used after double consonants like
ll,
rr,
and some
d
sounds and the soft
c
sounds.
|
|
|
|
-
infallible
-
horrible
-
divisible
|
-
plausible
-
edible
-
credible
|
-
credible
-
forcible
-
invincible
|