The Collaborative International Dictionary of English v.0.48:
Suitability \Suit`a*bil"i*ty\, n. The quality or state of being suitable; suitableness. [1913 Webster]WordNet (r) 3.0 (2006):
suitability n 1: the quality of having the properties that are right for a specific purpose; "an important requirement is suitability for long trips" [syn: suitability, suitableness] [ant: ineptness, unsuitability, unsuitableness]