unable
/ˌʌnˈeɪbəl/not having the power, skill, or opportunity to do something
The team was unable to complete the project on time.
The team couldn't finish the project by the deadline.
He is unable to speak after the accident.
He lost the ability to speak because of the accident.
Often used to describe a lack of ability or opportunity, not necessarily a permanent condition.
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💡Pro Tip
Common Usage
'Unable' is often used in formal or professional contexts, but it's also common in everyday speech. It can describe both temporary and permanent inability.
⚡Gold Rule
Formal vs. Informal
In informal contexts, 'unable' can often be replaced with 'can't' or 'couldn't,' but 'unable' is more formal and precise.
📖Word Origin
From Middle English 'unable,' from Old French 'inable,' from Latin 'inabilis,' meaning 'not able,' from 'in-' (not) + 'habilis' (able).
📝Usage Notes
Often used in formal contexts, but also common in everyday speech. Can describe temporary or permanent inability.