Global leaders have addressed the COVID-19 pandemic in various ways and registers well beyond the scientific-technical genre, some of which have been unexpectedly undermined by a war-like undertone broadcast by both the media and social networks (cf. conceptual metaphor as discussed, for example, by Lakoff, & Johnson 1980, and Koller 2011). According to Hartmann-Mahmud (2002), metaphors are often exploited to manipulate emotion and to justify courses of action related, in this case, to a pandemic scenario, thereby potentially fostering the labelling of the virus with lexemes such as an enemy, invisible or hidden, or even as a prompter for war, hatred, prejudice and racism. Particularly interesting for this research paper is the study in progress of the occurrence of metaphors, associated with the pandemic, retrieved from the Twitter of Donald Trump (https://twitter.com/realDonaldTrump), especially given his reported high engagement with interlocutors in social media (Walther 1992, Crystal 2006, Greengard 2009, Murthy 2013, Baym 2015, Burgess, & Baym 2020). The corpora comprise all original tweets disseminated by Trump in two periods: the first from September 2019 to January 2020; and the latter from February to June 2020. Drawing on corpus linguistics and a discourse-based approach (Baker 2006), it is possible to account for metaphors associated with the lemma COVID in Trump’s Twitter. Research findings indicate 123 occurrences of the lemma virus closely associated with the following lexical items: corona, Covid, China, Chinese, hidden enemy, invisible enemy and war. This study analyses conceptual metaphors in Trump’s communicative strategies throughout the early and mid-stages of the pandemic. Hence, it reflects upon the impact of figurative language in the social construction of meaning, particularly that of leaders’ interactions with citizens and internet followers in real world interactions via social media, which borrows increasingly from online exchanges (Sousa, & Ivanova 2012) more than any other media (for instance international press).