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be unable to

/biː ʌnˈeɪbəl tuː/
phrase★Intermediate— lack the ability or capacity to do something
general

to lack the ability, power, or capacity to do something

He was unable to finish the project on time.

He couldn't complete the project by the deadline.

The system is unable to process your request at this time.

The system can't handle your request right now.

💡

This phrase is commonly used to express a lack of ability or capacity in various contexts, from physical limitations to technical constraints.

Collocations

be unable to do somethingto lack the ability to perform an actionbe unable to attendto be unable to go to an event or meeting

Synonyms

be incapable ofbe unable to managebe unable to handle

Antonyms

be able tobe capable ofbe able to manage

Related Phrases

be incapable ofphrase
to lack the ability to do something
be unable to managephrase
to be unable to handle or control something

💡Pro Tip

Common Usage

'Be unable to' is often used in formal and informal contexts to express a lack of ability or capacity. It is commonly used in situations where someone or something cannot perform a task due to physical, mental, or technical limitations.

⚡Gold Rule

Correct Usage

Use 'be unable to' to express a lack of ability or capacity to do something. It is often used in formal and informal contexts.

📖Word Origin

The phrase 'be unable to' is a combination of the verb 'be' and the adjective 'unable', which comes from the Old English 'unable' meaning 'not able'. The phrase has been used in English for centuries to express a lack of ability.

📝Usage Notes

This phrase is commonly used in both formal and informal contexts to express a lack of ability or capacity. It is often used in situations where someone or something cannot perform a task due to physical, mental, or technical limitations.

Word Breakdown

be
to exist or occur
verb
+
unable
not able
adjective
+
to
infinitive marker
particle
English Dictionary

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