The Collaborative International Dictionary of English v.0.48:
nasalise \nasalise\ v. t. Same as nasalize. [Chiefly Brit.] [WordNet 1.5]WordNet (r) 3.0 (2006):
nasalise v 1: speak nasally or through the nose; "In this part of the country, people tend to nasalize" [syn: nasalize, nasalise] 2: pronounce with a lowered velum; "She nasalizes all her vowels" [syn: nasalize, nasalise]