Handiness n. : The quality or state of being handy.

Example:
Does your Handiness skill improve when you upgrade objects in the Sims 3?

Taxonomy
Handiness, dictionary, Encyclopedia, online dictionary, Synonyms, thesaurus browser, Free Online Dictionary, The Memphis Blues, hands, antonyms, handicraft, plate, English dictionary, free online English dictionary, skillfulness, convenience, Translations, law.

Defination from the web:
Handiness in the Online Dictionary. Meaning of Handiness. Pronunciation of Handiness. Translations of Handiness. Handiness synonyms, Handiness antonyms. ... been a gruff, "Give me size," as I heard another man reply to a remark praising the handiness of a small vessel. ...