(Latin: a suffix; expressing capacity, fitness to do that which can be handled or managed, suitable skills to accomplish something; capable of being done, something which can be finished, etc.)

A suffix that forms adjectives. The suffix -ible has related meanings; expressing ability, capacity, fitness; capable of, fit for, able to be done, can be done, inclined to, tending to, given to.

This list is only a small sample of the thousands of -able words that exist in English.

unacceptable (adjective), more unacceptable, most unacceptable
unaccountable (adjective)
1. Not answerable or responsible to anyone.
2. Impossible to explain or to give a reason for doing something.
3. Free from accountability; not responsible: "He was an salesman who was unaccountable to anyone except the president of the company."
unalienable (adjective), more unalienable, most unalienableCo
1. Conveying an incapability of being repudiated or transferred to another person or entity.
2. Characteristic of not being separated, given away, or taken away.
unalterable (adjective), more unalterable, most unalterable
A reference to something that is incapable of being changed or modified: There is an unalterable season of bitter cold during a Siberian winter.
unamiable (adjective), more unamiable, most unamiable
unappeasable (adjective)
1. Not to be placated or appeased or moved by entreaty.
2. Incapable of being appeased, significantly changed, or mitigated.
3. Impossible to appease or to satisfy: "We had an unappeasable thirst and hunger after the long, hot walk."
unavoidable (adjective), more unavoidable, most unavoidable
1. Impossible to prevent: Jim said getting home late was an unavoidable delay because of the accident that took place on the highway.
2. Inevitable or bound to happen: Due to the storm, there was an unavoidable two-hour delay of the aircraft landing.
uncharitable (adjective), more uncharitable, most uncharitable
1. Lacking love and generosity.
2. Harsh and severe.
3. Unfair or unkind: Why did Mary make such uncharitable remarks about Sam's failure to achieve the tennis championshiip?
1. Unable to drive or to force someone to do something.
2. Not getting something from a person, or people, by using force or some form of obligation.
Not hidden or unable to be kept as a secret.
unconquerable (adjective), more unconquerable, most unconquerable
A reference to something which cannot be captured or overcome: The unconquerable floods that have taken place in Great Britain during the winter of 2014 have caused a great loss of property and significant challenges for reconstruction in many parts of the country.