Adjective

(en adjective)

Able and efficient; having the ability needed for a specific task; having the disposition to do something; permitting or being susceptible to something.

She is capable and efficient.

He does not need help; he is capable of eating on his own.

As everyone knew, he was capable of violence when roused.

That fact is not capable of proof.

(obsolete) Of sufficient capacity or size for holding, containing, receiving or taking in. Construed with of'', ''for or an infinitive.

* 1775 Samuel Johnson, A Journey to the Western Islands of Scotland'' (''Works 10.479):

He has begun a road capable of a wheel-carriage.

Adjective

(-)

Not able; lacking a certain ability.

*{{quote-news, year=2011, date=December 21, author=Tom Rostance, work=BBC Sport

, title= Fulham 0-5 Man Utd , passage=Fulham switched off as Giggs took a quick corner to Valencia. He played it back to Giggs, whose cross was headed in by Nani with the lurking Rooney unable to add a touch. }}

*{{quote-magazine, date=2013-06-28, author=(Joris Luyendijk)

, volume=189, issue=3, page=21, magazine=(The Guardian Weekly) , title= Our banks are out of control , passage=Seeing the British establishment struggle with the financial sector is like watching an alcoholic […].  Until 2008 there was denial over what finance had become. […]  But the scandals kept coming, […]. A broad section of the political class now recognises the need for change but remains unable to see the necessity of a fundamental overhaul.}}

Are you unable to mind your own business or something?