When you want to emphasize the repeated occurrence of something, you may use the expression "many times over." However, there are other phrases that convey a similar meaning, such as "time and again," "repeatedly," "frequently," "numerous times," "ad nauseam," and "incessantly." These synonyms can help convey the idea of something happening repeatedly, with an emphasis on the frequency and persistence of the action. Whether you are writing an essay, a report, or a creative piece, using different phrases can add variety to your language and make your writing more engaging and memorable.