ANGLO-SAXON PREFIX 4 4. OVER-: "too," "excessively," "over," "beyond" overbearing domineering over others; inclined to dictate overburden to place too heavy a load on; burden excessively; overtax overconfident too sure of oneself; excessively confident overdose quantity of medicine beyond what is to be taken at one time or in a given period; too big a dose overestimate to make too high an estim..