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able
adjective
Having the necessary power, skill, knowledge, or resources to accomplish a particular task or action, including the freedom from constraints that would prevent successful completion.
Etymology
Example
"Despite her injury, the determined athlete was still able to complete the marathon and achieve her personal best time."
Usage Notes
Able suggests both inherent capability and situational opportunity. It is more formal than 'can' but less technical than 'capable.' Often used with infinitives (e.g., 'able to run'). Distinguish from 'enable' (to make possible). Suitable for casual to academic contexts, implying readiness and competence rather than mere permission.