misinformation UK /ˌmɪs.ɪn.fəˈmeɪ.ʃən/US /ˌmɪs.ɪn.fɚˈmeɪ.ʃən/ noun1 •Information that is incorrect, whether intentionally or unintentionally.My intent is not to criticize an unpublished biology paper, but only to demonstrate the ease with which misinformation can creep into popular literature. — 1983 formsmisinformations