Adverbs Perhaps, Maybe and Possibly*

AbstrAct This paper describes the use of perhaps, maybe and possibly in a cross-disciplinary corpus of academic and popularised scientific writing. It accounts for their higher frequency in popularised discourse by investigating their functions in detail. The analysis, conducted from various perspectives (syntactic, semantic, pragmatic and rhetorical), suggests that two factors are at work: the evidential basis for the epistemic assessment and the mode of discourse the marker is most closely associated with. The fact that perhaps and maybe express unsupported conjectures within explicative passages explains why they are less frequent in academic contexts where excessive recourse to ungrounded assumptions and to the explicative mode –which implies a knowledge asymmetry – would be harshly received. As for possibly, we show that its distribution depends on its interpretation. In its root meaning, it is equally fit for popularised and academic discourses. In its epistemic use, however, it is less frequent in research articles, 13Revista de Lenguas para Fines Específicos, 18 (2012) * We wish to thank the two anonymous reviewers for their insightful comments on the first draft of this paper. Any remaining errors are ours