Louise M. Sylvester is Senior Lecturer in English Language at the University of Westminster. She is the author of "Studies in the Lexical Field of Expectation "(1994); co-author of "Middle English Word Studies: a Word and Author Index" (2000); co-editor of "Lexis and Texts in Early English: Studies presented to Professor Jane Roberts "(2001); and "Teaching Chaucer "(2007) as well as essays on Middle English and cognitive approaches to lexicographical resources.