optable

As a noun terms

is .

As an adjective optable is

(obsolete) that may be chosen; desirable.

In obsolete terms the difference between aptable and optable

is that aptable is capable of being adapted while optable is that may be chosen; desirable.

As adjectives the difference between potable and optable

is that potable is good for drinking without fear of poisoning or disease while optable is (obsolete) that may be chosen; desirable.

As a noun potable

is any drinkable liquid; a beverage.

As adjectives the difference between desirable and optable

is that desirable is wanted while optable is (obsolete) that may be chosen; desirable.