adjective
unable
Not able to do something.
She is unable to open the jar without some help.
Etymology
The negative prefix reverses able. Unable describes a lack of the capacity or opportunity required to perform the action.
More examples
- Heavy snow leaves us unable to reach the cabin.
- I am unable to attend the meeting on Friday.
- The injured bird is unable to fly.
Forms
unable
inability noun — Lack of ability to do something.
Similar words
- incapable
- Often suggests lacking the skill or capacity required.
- powerless
- Emphasizes lacking the power or control to act.