If comparisons are slippery things, words are more treacherous still. Before I venture to discuss the presence or absence of radicalism in the Irish verse of the revolutionary era, it would be prudent to outline my understanding of the term. ‘Radicalism’ is a concept of English origin and the word entered the language in the early nineteenth century: the earliest citation in the Oxford English Dictionary dates from 1820, at which time it signified the political principles of those who advocated a ‘radical’ – that is to say, a root and branch – reform of the Westminster parliament. The use of the adjective in this context can be traced as far back as the 1780s when Christopher Wyvill proposed a ‘radical reform in the representation’ and John Jebb envisaged a ‘radical reformation’. Not unreasonably, if somewhat anachronistically, historians commonly describe those who campaigned for an extensive reform of parliament in the later decades of the eighteenth century as ‘radicals’ – from John Wilkes and the Society for the Defence of the Bill of Rights in the 1760s and 1770s, to John Cartwright and the Society for Constitutional Information in the 1780s, to Thomas Paine and the various Corresponding Societies of the 1790s. Aside from their core demand for parliamentary reform – encompassing such measures as frequent elections, more equal constituencies and a broader franchise – radicals also became identified with opposition to the royal prerogative, with support for religious toleration and repeal of the Test and Corporation Acts, and with sympathy for the American and French Revolutions.