(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.

incapable (adjective), more incapable, most incapable
incharitable (adjective), more incharitable, most incharitable
Relating to being unloving or unfeeling.
includable (adjective)
incommensurable (adjective)
incommunicable (adjective), more incommunicable, most incommunicable
Descriptive of that which cannot be shared, told, or transmitted: "Samuel possessed the incommunicable information about the decisions made by the Board of Directors."
incomparable (adjective)
1. Unsuitable for comparison or lacking features that can be compared.
2. So excellent, outstanding, or unique as to have no equal.
3. Impossible to compare with something else, because there is no basis for a comparison.
inconcealable (adjective)
1. Not concealable or something which can not be hidden.
2. Anything which is not hidden or that is unable to be kept as a secret.
inconceivable (adjective), more inconceivable, most inconceivable
1. Something that is impossible to think about or to imagine: Brandon's inconceivable success in business was thought to be highly unlikely.
2. Descriptive of something which is so unlikely that it is difficult to believe that it exists: The earthquake was an inconceivable disaster that was impossible to image.

There are some inconceivable things that really can't happen or certainly will not happen.

A reference to something which is unbelievable or can't be imagined.
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Descriptive of a situation that is unimaginable, unbelievable, or unthinkable.
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inconceivable, unthinkable
inconceivable (in" kuhn SEE vuh buhl) (adjective)
Impossible to understand: It was inconceivable that the professor wrote such an unsubstantiated article about the president of the university.
unthinkable (un THING kuh buhl) (adjective)
1. Impossible to be understood by the mind or contrary to reasonable expectations: It was unthinkable that the children should be expected to walk so far.
2. Difficult to imagine or to believe: It was unthinkable that the teacher was leaving the school before the end of the semester.

Tamika found the mathematical formula on the examination inconceivable; however, it was unthinkable that she would fail the exam because of this one problem.

incondensable, incondensible
1. Difficult or impossible to condense: "The judge presented an incondensable judicial opinion."
2. Not condensable; incapable of being made more dense or compact, or reduced to liquid form.
inconsolable (adjective), more inconsolable, most inconsolable
Extremely sad and very disturbed and unable to be comforted: Mildred was most inconsolable when she heard that her brother and his wife died in the airplane crash the day before.
incremable (adjective) (not comparable)
A reference to anything which can not be burned.
1. Free of guilt.
2. Not subject to blame; blameless.
incurable (adjective) (not comparable)
indefinable (adjective), more indefinable, most indefinable
Characterized by being impossible to clearly describe or to explain: The comedian has an indefinable quality that attracts people to see his TV programs.

When Todd and Tamika saw the lightening and heard the thunder and very strong winds, they had the most indefinable terror that they had ever experienced before.