presidentialness UK /ˌpɹɛzɪˈdɛnʃəlnəs/US /ˌpɹɛzɪˈdɛnt͡ʃəlnɪs/ noun1 •The quality of being presidential; suitability for the presidency.Likewise, Perot continued to work on the miscellaneous goal of proving his own presidentialness via use of statistics and common sense. — 1994