Core Definition
Able is an adjective describing having the power, skill, or capacity to do something. It refers to someone who is capable of performing an action, handling a task, or functioning effectively, either mentally, physically, or practically.
Key Examples
She is able to explain complex ideas clearly.
He was able to finish the task on time.
The system is able to handle large amounts of data.
After months of recovery, she was finally able to walk again.
Pronunciation
UK: /ˈeɪbəl/
US: /ˈeɪbəl/
Stress: first syllable — A-ble.
Common learner note: the second syllable is weak and unstressed.
Part of Speech
Adjective.
Frequency & Register
CEFR Level: A2–C2.
Register: neutral; common in everyday speech, professional communication, academic writing, and formal contexts.
Extended Meaning
At its core, able expresses capability in action. Unlike nouns such as ability, which describe capacity in general, able focuses on whether a person or thing can actually perform a specific action.
Able may describe:
- physical capability (able to walk),
- mental or cognitive capability (able to understand the problem),
- practical or situational capability (able to meet the deadline),
- restored or regained capability (finally able to work again).
Because of this focus on action, able is frequently used to highlight results, readiness, or successful performance.
Usage Overview
Able is most commonly used with to + verb to describe what someone can do in a particular situation. It often emphasizes success, possibility, or readiness rather than general skill.
The word is neutral and highly flexible, making it suitable for both informal conversation and formal writing. It frequently appears in contexts involving achievement, recovery, problem-solving, and decision-making.
Grammar Notes
Able is followed by to + base verb.
She is able to solve the issue.
It is often used:
- with forms of be (is able, was able, will be able),
- to refer to specific situations, especially in the past.
He was able to fix the problem yesterday.
In many contexts, able to overlaps with can, but able to often sounds more deliberate or formal.
Patterns
be able to + verb
Used to express capability or success.
They are able to complete the project.
was / were able to
Often used for a successful action in the past.
She was able to escape safely.
finally / now / no longer able to
Used to highlight change over time.
He is no longer able to drive.
able to cope / manage / handle
Used in practical or emotional contexts.
She is able to cope with the pressure.
Collocations
able to understand
able to work
able to manage
able to cope
physically able
mentally able
fully able
He is fully able to take responsibility.
Dialogues
Everyday
A: Can you help with this?
B: Yes, I’m able to do it now.
Professional
A: Are we ready to meet the deadline?
B: Yes, the team is able to deliver on time.
Academic
A: Were participants able to complete the test?
B: Most of them were able to finish successfully.
Health
A: How is she after the injury?
B: She’s able to walk again, slowly.
Stories
After weeks of preparation, the team faced the final challenge.
They were nervous but able to stay focused and complete the task.
The accident changed his daily routine.
For a long time, he wasn’t able to work, but gradual recovery helped him regain confidence.
The new software looked complicated at first.
With training, employees became able to use it efficiently.
Mini Test
She wasn’t ___ to attend the meeting.
Answer: able
True or False:
Able is usually followed by to + verb.
Answer: True
Choose the correct option:
He was able (fix / to fix) the issue quickly.
Answer: to fix
Create a sentence using able to manage.
Sample answer: She is able to manage the team effectively.
Synonyms and Antonyms
Synonyms
capable — having the ability
competent — adequately skilled
qualified — officially or practically prepared
fit — suitable or ready
skilled — trained or experienced
Antonyms
unable — not capable
incapable — lacking ability
unfit — not suitable
helpless — lacking power to act
ineffective — not producing results
Semantic Field
able vs. can — able is more deliberate and often more formal.
able vs. capable — capable is broader and more descriptive.
able vs. skilled — skilled emphasizes training and experience.
Word Family
able (adjective) — having the power or skill to do something
ability (noun) — capacity or competence
unable (adjective) — not able
disable (verb) — make unable
FAQ
Is able more formal than can?
Yes. Able to often sounds more deliberate or formal, especially in writing.
Can able be used in the past?
Yes. Was able to is common when focusing on successful action.
Is able used for skills or situations?
Both. It can describe general capability or a specific situation.
Can able describe recovery?
Yes. It is often used to show regained ability after difficulty.
Conclusion
Able is a core adjective used to express capability, readiness, and successful action. It highlights what someone can do in a specific context and works across physical, mental, and practical domains. Mastering able allows learners to speak clearly about possibility, progress, and achievement in both everyday and formal English.