overdate /ˈəʊvə(ɹ)deɪt/noun 1/əʊvə(ɹ)ˈdeɪt/ verb 1forms 3 noun1 •A coin on which one date is superimposed over traces of another (due to reuse of a die). overdate /əʊvə(ɹ)ˈdeɪt/ verb1 •To date later than the true or proper period.And had he also redeem'd his overdated minority from a Pupillage under Bishops, he would much less have mistrusted his Parlament[…] — 1649 formsoverdated · overdating · overdates