Added 10 October 2026 cooccur verb Categories: Obscure Words verb ! Definition from WordNet 3.1, Princeton University. More about cooccur at Wordnik → Where our words come from → Go with, fall together. Related Words: coincidecoöccurco-occurco-createco-existcoëxistco-ordinateoccurco-operatecoappearcoöperateco-mingle Back to today's word