In this study, we explore L1 and L2 speakers’ use of degree modifiers (DMs) aika/melko/ihan and quite/rather/fairly in a cross-linguistic setting, with academic Finnish and English as languages of interest. As a method, we apply a multivariate approach that considers the constructional features of the DMs. The statistical modelling showed reliably that, in both languages, L1 and L2 speakers made partially different choices when using the DMs. The model predicted the DM use of both languages well, although it explained the variation of the Finnish DMs better. In general, the English L2 use of the DMs was closer to English L1 use than was the case in Finnish, where the populations had a clearly different favourite among the three DM variants. The results suggest that the examined DM group is more fixed in academic Finnish, whereas in academic English the choice between the examined DM variants is more open.