(kāʹvē-ăt´, kăvʹē-, käʹvē-ät´) noun. 1. a. A warning or caution: b. A qualification or explanation. 2. Law. A formal notice filed by an interested party with a court or officer, requesting the postponement of a proceeding until the filer is heard. Verb caveated or caveatted, caveating or caveatting, caveats or caveats, kaveat.