ventilate v. + Add to list US //ˈvɛnəˌɫeɪt// UK //vˈɛntɪlˌeɪt// ven·ti·late Slang SynonymsEtymology Synonyms airventOriginLATventilātus→ME-→ENventilate From Middle English, borrowed from Latin ventilātus, past participle of ventilō.