The blurring of the boundaries: changes in verb/noun heterosemy in Recent English

Abstract Conversion is a common feature of present-day English, leading to many ‘heterosemous’ words that express related meanings across multiple word classes. Especially common is verb/noun heterosemy, as in flow or hand, both of which can be used as verbs or as nouns. The prevalence of verb/noun heterosemy sets English apart from closely related Germanic languages and is one respect in which English behaves as a language with high boundary permeability. This paper investigates how verb/noun heterosemy has been evolving in Recent English (1920s–2010s). Using quantitative analysis within a large sample of 877 heterosemous words, it is shown that associations between specific words and word classes have been weakening over the last century. More precisely, within our sample, heterosemous words on average tend to develop towards more balanced heterosemy, whereby their association to either one word class or another becomes less pronounced. The findings suggest that English is in the process of a long-term drift towards greater boundary permeability. As high boundary permeability has been associated with low reliance on inflectional morphology in a language, this could be a long-term consequence of the overall loss of inflections earlier in the history of the language.