Able vs Capable vs Competent vs Fit
When to use each in English, with meaning, register, and examples.
Able
Capable
Competent
Fit
| Able | Capable | Competent | Fit | |
|---|---|---|---|---|
| Pronunciation | 🇬🇧 /["/ˈeɪbl/","/ˈeɪblə(r)/","/ˈeɪblɪst/"]/🇺🇸 /["/ˈeɪbl/","/ˈeɪblər/","/ˈeɪblɪst/"]/ | 🇬🇧 /["/ˈkeɪpəbl/"]/🇺🇸 /["/ˈkeɪpəbl/"]/ | 🇬🇧 /["/ˈkɒmpɪtənt/"]/🇺🇸 /["/ˈkɑːmpɪtənt/"]/ | 🇬🇧 /["/fɪt/","/fɪts/","/ˈfɪtɪd/","/ˈfɪtɪŋ/"]/🇺🇸 /["/fɪt/","/fɪts/","/ˈfɪtɪd/","/ˈfɪtɪŋ/"]/ |
| Meaning | Having the skill, power, or opportunity to do something. | able to do something; having the skill or power to do it | Able to do something well | To be the right size or shape for something. |
| Example | She is able to speak three languages. | She is quite capable of handling difficult situations on her own. | She is a competent lawyer who always wins her cases. | I need to fit this new sofa into my living room. |
| Register | Neutral | Neutral | Neutral | Neutral |
| How common | Top 1,000 (very common) | Top 2,000 (common) | Top 2,000 (common) | Top 1,000 (very common) |
| CEFR level | A2 | B2 | C1 | A2 |
| Part of speech | adjective | adjective | adjective | verb |
| Collocations | be, feel, prove, fully, perfectly, quite, be, seem, extremely, fairly, very | appear, be, feel, fully, more than, perfectly, be, seem, extremely, fairly, very | be, feel, look, extremely, fairly, very, in, be, feel, look, extremely, fairly, very, in | closely, neatly, nicely, be designed to, in, into, onto, closely, neatly, nicely, be designed to, in, into, onto, perfectly, seamlessly, for, with, perfectly, seamlessly, for, with |
| Antonyms | unable, incapable | incapable, unable | incompetent, inept, unqualified | miss, squeeze, misfit |
| Common mistakes | Confused with 'capable' — they are similar but not interchangeable., Using 'able' without 'to' when following it with a verb., Incorrectly using 'able' with a past event. | Confused about using 'capable of' versus 'capable for'., Using 'capability' instead of 'capable' incorrectly., Using 'capable' as an adverb (it’s an adjective). | 'Competency' is confused with 'competence' despite the latter being more commonly used., Using 'competent' as a noun instead of an adjective., Confusing 'competent' with 'complacent', which means self-satisfied. | 'Fit' is often confused with 'fitted' — 'fit' describes the state, 'fitted' describes the act of making something fit., Some learners forget to use the preposition 'into' when discussing fitting in a space (e.g., 'fit into the box')., Using 'fit' as a noun instead of a verb can lead to confusion, as it mainly functions as a verb. |
| Usage notes | Use 'able' to express capability in a neutral context. It’s appropriate in both spoken and written English but avoid using it in overly formal situations. | Use 'capable' to describe someone or something that has the ability to achieve a task. It's suitable in both personal and professional contexts. Avoid using it in overly casual situations. | Use 'competent' to describe someone who can perform a task effectively. It's appropriate in professional or academic contexts, but may sound too formal in casual conversations. | Use 'fit' when discussing whether something matches well or is suitable. It's neutral, so it can be used in both casual and formal conversations. Avoid using it when discussing emotional or abstract concepts; it’s more about physical or practical suitability. |
See it in real clips
Frequently asked questions: Able vs Capable vs Competent vs Fit
What's the difference between Able, Capable, Competent, and Fit?
Able: Having the skill, power, or opportunity to do something. Capable: able to do something; having the skill or power to do it Competent: Able to do something well Fit: To be the right size or shape for something.
Which is more advanced: Able, Capable, Competent, and Fit?
Competent is the highest level, at C1, on the CEFR scale.
Are Able, Capable, Competent, and Fit the same CEFR level?
Able: A2, Capable: B2, Competent: C1, Fit: A2 on the CEFR scale.
What part of speech are Able, Capable, Competent, and Fit?
Able: adjective, Capable: adjective, Competent: adjective, Fit: verb.
Can you show an example of each?
Able: She is able to speak three languages. Capable: She is quite capable of handling difficult situations on her own. Competent: She is a competent lawyer who always wins her cases. Fit: I need to fit this new sofa into my living room.
Can I use Able, Capable, Competent, and Fit interchangeably?
Not always. Able, Capable, Competent, and Fit are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.