(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.

inexpiable (adjective), more inexpiable, most inexpiable
Impossible of being excused or atoned for something; unpardonable: Tommy was sent home from school due to his inexpiable behavior towards his classmates.
inexplicable (adjective), more inexplicable, most inexplicable
Not capable of being explained; unexplainable: Sally didn't want to go to the beach with her friends on that gorgeous day in the summer and they thought that was totally inexplicable!
inexsuperable (adjective), more inexsuperable, most inexsuperable
Not capable of being passed over; insurmountable: Her excellent performance that evening was absolutely inexsuperable and the audience applauded forever!
inextirpable (adjective), more inextirpable, most inextirpable
Impossible of being exterminated; ineradicable: Mrs. Thompson tried to destroy the inextirpable wild boysenberries in her garden because they were dangerous for her little children playing there.
inflammable (adjective), more inflammable, most inflammable
1. Something that is quickly and easily set on fire and burned; combustible: To keep themselves warm in the living room, Mr. Thompson used inflammable wood so that the family could enjoy the blazing flames in the hearth.
2. Easily aroused or excited, as to passion or anger; irascible: Her father had an inflammable disposition regarding the men she was dating.
informidable (adjective), more informidable, most informidable
A reference to someone or a condition that is not to be feared or dreaded: The residence where Sally and her family lived was a result of having good informidable neighbors.
infrustrable (adjective), more infrustrable, most infrustrable
Not prone to being defeated or thwarted: Even when it was so difficult for Mary to complete the task for school, she was completely infrustrable and persevering and never gave up throughout the project.
ingelable (adjective), more ingelable, most ingelable
Not susceptible to coagulate or to solidify: Fat is ingelable when it is very hot on the stove.
ingustable (adjective), more ingustable, most ingustable
Tasteless; insipid: The meal that Jane prepared was ingustable, bland, and without flavor.
inhabitable (adjective), more inhabitable, most inhabitable
Suitable to be lived in: Tom's lovely home was inhabitable, but his father's pickup truck really wasn't very inhabitable!
inheritable (adjective) (not comparable)
1. Possible of something being obtained from a person after their death: The inheritable objects and villa of the deceased aunt went to the only relations she had had.
2. Susceptible of receiving by genetic transfer: Grandmother's brown eyes can be inheritable to the next generation.
inhospitable (adjective), more inhospitable, most inhospitable
1. Not subject to being friendly or welcoming: Tamara thought that the people in Germany would be inhospitable and unsocial, but after living there for one year, she found it to be quite the opposite!
2. Not disposed to providing shelter; forbidding: The desert was quite barren, very not, and inhospitable, so the Lawsons decided to continue their trip to find a more favorable camping ground.
inimaginable (adjective), more inimaginable, most inimaginable
Inconceivable; incredible; unbelievable: The damage the earthquake caused to the area was inimaginable and horrifying.
innumerable (adjective), more innumerable, most innumerable
Incapable of being summed up; not to be totaled up: The innumerable stars in the sky are obviously just too many to be counted!

Regardless of what government officials claim, there are innumerable people in the world.

inoculable (adjective) (not comparable)
1. Regarding a disease that can be treated by a vaccine: People all over the world are hoping that the coronavirus will be inoculable by the middle of the following year.
2. Relating to a disease transmitted by a vaccination: When injected into an individual, the inoculable bacteria should cause or create immunity, but not the illness itself.
3. Referring to that which can be used in an injection: The medicament was considered to be inoculable and was used to treat patients by giving them a dose in the form of an injection.