This thesis examines the status of whether in Generative Grammar. There is no consensus in the existing literature on the syntactic status of whether. Some linguists (Haegeman, 2006; Huddleston ...Show moreThis thesis examines the status of whether in Generative Grammar. There is no consensus in the existing literature on the syntactic status of whether. Some linguists (Haegeman, 2006; Huddleston & Pullum, 2002; Van Gelderen, 2013; among others) argue that whether is a complementiser, on a par with that and if. The example in (1) illustrates this position: (1) I don’t know whether/if I’ll go to the party. Other linguists (Newson et al, 2006; Radford, 1997, 2004, 2009; among others) have posited that whether is a wh-phrase, on a par with who and when. The example in (2) illustrates this position: (2) I don’t know whether/when I’ll go to the party. In this thesis, I aim to find out which of these positions is to be preferred: is whether a complementiser or a wh-phrase? I will attempt to answer this question through synchronic and diachronic research, using data from the existing literature. I will analyse the present-day syntactic behaviour of whether, its historical development and its morphology and critically evaluate the evidence for the two positions as presented in the existing literature.Show less