Vax is Oxford Languages’ 2021 Word of the Year. When their lexicographers began digging into their English language corpus data, it quickly became apparent that vax was a particularly striking term. A relatively rare word until this year, by September it was over 72 times more frequent than at the same time last year. It has generated numerous derivatives that we are now seeing in a wide range of informal contexts, from vax sites and vax cards to getting vaxxed and being fully vaxxed, no word better captures the atmosphere of the past year than vax. Download the report to explore the evidence-based approach Oxford Languages has taken to tracking and analyzing the rapid development of the language of vaccines in 2021.