adorable
arguable
desirable
excusable
indispensable
leisurable
But this rule is open to exceptions upon which authorities are not agreed. The following spellings are in The Oxford Dictionary, and must be followed:
advisable
analysable
ascribable
atonable
baptizable
believable
blameable
bribable
chaseable
confinable
conversable
creatable
datable
debatable
defamable
definable
delineable
dilatable
dissolvable
drivable
endorsable
evadable
excisable
exercisable
finable
forgivable
framable
giveable
hireable
immovable
improvable
indispensable
inflatable
irreconcilable
lapsable
likeable
linable
liveable
losable
lovable
malleable
movable
nameable
overcomable
palatable
partakable
pleasable
provable
rateable
rebukeable
receivable
reconcilable
removable
saleable
solvable
tameable
tuneable
unmistakable
If -able is preceded by ce or ge, the e should be retained, to preserve the soft sound of c or g, as—
bridgeable
changeable
chargeable
knowledgeable
lodgeable