The Collaborative International Dictionary of English v.0.48:
Handiness \Hand"i*ness\, n. The quality or state of being handy. [1913 Webster]WordNet (r) 3.0 (2006):
handiness n 1: skillfulness with the hands; "he can do any sort of work requiring handiness and dexterity" 2: the quality of being at hand when needed [syn: handiness, accessibility, availability, availableness] [ant: inaccessibility, unavailability]