The Collaborative International Dictionary of English v.0.48:
Incommensurate \In`com*men"su*rate\, a. 1. Not commensurate; not admitting of a common measure; incommensurable. [1913 Webster] 2. Not of equal of sufficient measure or extent; not adequate; as, our means are incommensurate to our wants. Syn: Inadequate; insufficient; disproportionate. -- In`com*men"su*rate*ly, adv. -- In`com*men"su*rate*ness, n. [1913 Webster]