The Collaborative International Dictionary of English v.0.48:
Evitable \Ev"i*ta*ble\, a. [L. evitabilis: cf. F. ['e]vitable.] Avoidable. [R.] --Hooker. [1913 Webster]WordNet (r) 3.0 (2006):
evitable adj 1: capable of being avoided or warded off [syn: evitable, avoidable, avertible, avertable] [ant: inevitable]