(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.

extinguishable (adjective), more extinguishable, most extinguishable
extirpable (adjective)
fashionable (adjective)
favorable (adjective)
1. Characterized by approval or support; positive: "He received a favorable report regarding the completion of his project."
2. Creating or winning favor; pleasing: "She made a favorable impression."
3. Affording advantage, opportunity, or convenience; advantageous: "Her father has a favorable position in his company."
4. A reference to a request resulting in the granting of what is desired.
5. Boding well; propitious: "The signs are favorable for a new start."
fermentability (s) (noun), fermentabilities (pl)
The capability of producing gradual chemical changes in which bacteria, enzymes, etc., change sugar into alcohol and produce carbon dioxide: The fermentability of yeasts can be seen in certain foods when alcohol is produced.

Fermentability is possible in a process resulting in alcoholic beverages, such as beer, wine, and whiskey.

fermentable (adjective), more fermentable, most fermentable
Pertaining to the decomposition of organic compounds: There are fermentable changes that take place when glucose is converted into ethyl alcohol through the action of yeast or bacteria.

Yoghurt is a result of fermentable milk with bacteria.

Wine comes from leaving fermentable grape juice to chemically change when all of the sugar has turned into alcohol.

fixable (adjective), more fixable, most fixable
1. Relating to something which can be established or rendered firm: Tom pitched a tent, but it wasn’t secure; so, he decided to try again and, since it was fixable, he pounded the stakes into the ground a second time.
2. Capable of being repaired or restored: Since there was only a minor problem with the coffee machine, the company thought it was fixable and so they quickly repaired it.
flammable (adjective)
1. Easily set on fire; combustible; inflammable.
2. Easily ignited and capable of burning rapidly.
flammable, inflammable, nonflammable
flammable (FLAM uh buhl) (adjective)
Pertaining to something which is capable of being set on fire and of burning quickly: Gasoline is a very flammable liquid.
inflammable (in FLAM uh buhl) (adjective)
Easily excited, aroused, or angered: "Roy had an inflammable temper when he felt he was being wronged" is a proper usage, but it should no longer be used with reference to something that will not burn.

The word inflammable actually means "able to burn"; while "nonflammable" means "unable or unlikely to burn".

The prefix "in-", used with inflammable is an intensifier not a "negative" as with such words as "inhospitable", "inhuman", "insensible", "indecent", "inadequate", etc. It has been a mistake believed by many people that inflammable meant "not flammable" and some serious injuries resulted over the years because of this misunderstanding.

As a consequence, many English-speaking countries passed laws that have required manufacturers of materials and substances that burn easily to use the word "flammable" in place of inflammable, which is considered less ambiguous or confusing.

So remember that inflammable comes from "inflame", which, in this case, means "to set on fire" and not from "in-", "not" + "flammable", "combustible".

nonflammable (nahn FLAM uh buhl) (adjective)
Descriptive of something that is not readily ignited and so it does not burn easily: It is much more realistic that people use nonflammable or non-flammable instead of inflammable when they mean that something cannot burn or is very difficult to burn.

In the confusion at the store, which was caused by a customer's inflammable temper, Joseph was unable to read the sign to see if the can of solvent was flammable or non-flammable.

flocculable (adjective)
Capable of being woolly or flocky.
fluctuability (s) (noun) (no pl)
The capacity or ability to make frequent and irregular changes; able to make a variety of movements or actions: The fluctuability that an owl shows with turning its head in an almost complete circle is something that really catches one's eyes!

Long stems of grass or grain growing on the fields show a great amount of fluctuability when the wind blows and causes the long stems to turn in all directions.

forfeitable (adjective)
formidable (FOHR mi duh buhl, fohr MID uh buhl) (adjective), more formidable, most formidable
1. Descriptive of something which is difficult to deal with or to overcome: Preparing for war is a formidable task for any country.
2. Relating to something which inspires respect or wonder because of size, strength, or ability: Shirley exhibited a formidable display of skill whenever she worked with her computer.
3. A reference to the anxiety of fear, dread, or alarm: A fratricide, or the killing of one's brother, became a formidable concern by the killer's sister because the murderer still had not been apprehended by the police.
4. Etymology: from Latin formidabilis from formidare, "to fear, to dread".
Relating to causing fear or being felt as dangerous.
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frequentable (adjective)
frigostable (adjective); more frigostable, most frigostable
Resistant to low temperatures or iciness: The coat Tony bought for his trip to Canada in the winter was of a frigostable fabric and could be washed easily.