(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.

cognizable (KAHG ni zuh buhl, kahg NIGH zuh buh) (adjective), more cognizable, most cognizable
1. The capability of being aware of something or able to perceive with the mind: The dates for the city events were all cognizable because they had been discussed and were publicized to take place in the spring.
2. Regarding something within a law court's jurisdiction of a particular court of law and therefore able to be tried by that court: The facts of the case of a cognizable malpractice were ordered by the judge to be determined by another legal trial.
colorable (adjective), more colorable, most colorable
1. Concerning something that can be painted or drawn with tones or shades of yellow, pink, red, blue, etc: All of the illustrations in the book are colorable and will be a good activity for the children.
2. Pertaining to something able to be justified or correct: The argument Tony gave was a colorable or valid one, and could very well be supported in a lawsuit.
3. Referring to something planned or schemed to deceive: The reasons Sam gave for his actions were colorable and intended to conceal and did not match up with reality.
comfortable (adjective), more comfortable, most comfortable
1. Referring to something which is free from stress or anxiety; restful: Sharon gave her mother a comfortable chair so she could enjoy watching TV.
2. Relating to a situation that provides financial security: Tom had comfortable earnings for his family now and into the future.
commendable (adjective), more commendable, most commendable
A reference to someone or something that deserves praise or admiration: Susan did very commendable work while editing the online dictionary for her friend, putting in a lot of time, effort and knowledge.
commensurable (adjective), more commensurable, most commensurable
1. Regarding numbers that can be divisible by the same factor: The digits 6 and 9 can both be divided by 3, and so they are commensurable digits.
2. Pertaining to the capacity of being calculated by a common criterion: Since a yard and a foot can both be measured by inches, they are both commensurable.
3. Referring to something which is consistent with or in accordance with something else: The salaries for teachers are commensurable or proportionate to their educational qualifications and to the number of years of teaching.
committable (adjective), more committable, most committable
Pertaining to an offence able to be carried out: Tim made committable blunders when he was young, but now he is an adult and has learned from them.
communicable (adjective), more communicable, most communicable
Descriptive of that which can readily be passed between one location or person to another: Measles is a very communicable disease and infected persons should stay away from other people.
companionable (adjective), more companionable, most companionable
Pertaining to a person or animal that is friendly and sociable: Jane's girlfriend was very companionable because she was so good-natured, warm, and convivial.
comparable (adjective), more comparable, most comparable
Capable of having features in common with something else in order to permit or to suggest differences or similarities: Jack was offered two jobs with comparable wages, but after thinking about which one he should take, he chose the one closer to his home.
compassion (s) (noun), compassions (pl)
A recognition, perception, and deep sympathy or pity of the sufferings or troubles of another, accompanied by an urge to help: Mrs. Smith's neighbor was so kind-hearted and showed so much compassion after Mrs. Smith lost her husband in a plane crash.

Compassion is the sympathy with which some people remember the homeless because it costs nothing.

—Based on an Evan Esar quote.
compellable (adjective) (not comparable)
1. Pertaining to the ability to capture and to hold a person's attention: The story Mrs. Smart was reading to her class was so compellable that all the children were listening very carefully.
2. Regarding the capability of causing someone to believe or to agree with something: He made a compellable and convincing argument so that everyone in the room approved of it.
3. Referring to something which makes a person feel that something must be done: The reasons in the petition for a new playground for the children were quite compellable, so all the parents signed it immediately and hoped that it would be built soon!
compliable (adjective), more compliable, most compliable
Regarding something or someone capable of yielding or bending: Mrs. White had a very compliable, accommodating, and agreeable temper which rewarded her with many friends in comparison to the past when she wasn't so compliable and cooperative.
comportable (adjective), more comportable, most comportable
Characterized by behavior that is appropriate or appropriate for a situation: Kate’s comportable discretion during the funeral of her friend was respectful and appreciated.
computable (adjective), more computable, most computable
Relating to that which can be reasonably determined: Hank was able to calculate the computable odds of winning the football game.
concealable (adjective), more concealable, most concealable
Capable of being hidden, withdrawn, or removed from observation: Little Jenny was happy that she had long curtains in her bedroom, making her concealable from her parents when she hid behind them, and therefore not being easily found by her parents!