ad nau ‧ se ‧ am /ˌæd ˈnɔːziəm, -iæm $ -ˈnɒː-/ BrE AmE adverb
[ Date: 1600-1700 ; Language: Latin ; Origin: 'to sickness' ]
if you say or do something ad nauseam, you say or do it so often that it becomes annoying for other people:
Look, we’ve been over this ad nauseam. I think we should move on to the next item.