Italian adjectives ending in -bile and their negation

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Published Nov 3, 2020
Updated Apr 22, 2025
Written by
Italian language tutor, course author. MEng, MBA. Member of the International Association of Hyperpolyglots (HYPIA). After learning 12 languages, I can tell you that we all master languages by listening and mimicking. I couldn’t find an app to recommend to my students, so I made my own one. With my method, you’ll be speaking Italian from Lesson 1.
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Key Takeaways

  • Italian adjectives ending in -bile indicate possibility or ability to possess a certain characteristic.
  • Common examples include accessibile (accessible), credibile (credible), and possibile (possible).
  • Negation of these adjectives is typically formed by adding in-, im-, or ir- at the beginning.
  • Use in- for most adjectives, while im- is used for those starting with p or m.
  • For adjectives starting with r, use ir- for negation, such as irresponsabile (irresponsible).

Audio images

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Main Article

What are the adjectives ending in -bile?

In Italian, there are groups of adjectives that have the same ending. In this case, we’re going to focus on those ending in -bile (either –able or –ible).

This specific ending comes from Latin and refers to the possibility or the ability to have a specific characteristic.

Their equivalents in English usually end in -ble (also either -able or -ible) so they are easy to recognize and learn. Here’s a list of common adjectives ending in -bile:

  • accessibile: accessible
  • accettabile: acceptable
  • compatibile: compatible
  • comprensibile: comprehensible
  • concepibile: conceivable
  • credibile: credible
  • desiderabile: desirable
  • paragonabile: comparable
  • possibile: possible
  • responsabile: responsible
  • sensibile: sensitive (if you want to say sensible, then you can say sensato)
  • vulnerabile: vulnerable

What are the adjectives starting with in-, im-, ir- and ending in -bile?

Like in English, in Italian we can say the opposite of an adjective just by adding two letters at the beginning of it: either in-im-, or -ir. Think of the words possible vs. impossible, or credible vs. incredible.

It’s the same logic in Italian. We tend to use in- much more often than im-.

However, there are some exceptions: im- is usually added to those adjectives starting with a “p” or an “m“.

There is a much less common one which is ir- for those words starting with an “r“. We’ll give you the opposite of the first five adjectives that we saw above.

We’ll leave the rest to you. Make sure you apply the rules we just gave you.

  • inaccessibile: inaccessible
  • inaccettabile: inacceptable
  • incompatibile: incompatible
  • incomprensibile: incomprehensible
  • inconcepibile: inconceivable

Key Terms and Concepts

Words

accessibileaccessible
inaccessibileinaccessible
accettabileacceptable
inaccettabileunacceptable
compatibilecompatible
incompatibileincompatible
comprensibileunderstandable
incomprensibileincomprehensible
ammissibileadmissible
inammissibileinadmissible

Phrases

accessibileaccessible
inaccessibileinaccessible
accettabileacceptable
inaccettabileunacceptable
compatibilecompatible
incompatibileincompatible
comprensibileunderstandable
incomprensibileincomprehensible
visibilevisible
invisibileinvisible

Sentences

L'ingresso della torre è completamente accessibile ai visitatori.

The tower entrance is completely accessible to visitors.

Questa proposta è accettabile, ma dobbiamo discutere alcuni dettagli.

This proposal is acceptable, but we need to discuss some details.

La vecchia tecnologia è spesso incompatibile con i nuovi dispositivi.

Old technology is often incompatible with new devices.

L'accesso al giardino è inaccessibile durante i lavori di ristrutturazione.

Access to the garden is inaccessible during renovation work.

Il comportamento dell'impiegato era inaccettabile e ha richiesto un'azione disciplinare.

The employee's behavior was unacceptable and required disciplinary action.

FAQs

How do adjectives work in Italian?

The Italian language follows a grammatical rule wherein an adjective must match the gender and number of the noun it describes. This means that if the noun is feminine and singular, the adjective should also be feminine and singular. Similarly, if the noun is masculine and plural, the adjective should be masculine and plural as well.

Where are adjectives placed in Italian?

Italian grammar dictates that adjectives are usually placed after the noun they describe. When using two adjectives, they are linked by the conjunction "e" (meaning "and"), either before or after the noun. It is important to bear in mind that the adverb "molto" (meaning "very") always follows the noun when used with an adjective.

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