Definition of ad nauseam in US English:

ad nauseam

adverb

  • Referring to something that has been done or repeated so often that it has become annoying or tiresome.

    ‘the inherent risks of nuclear power have been debated ad nauseam’
    repeatedly, again and again, over and over, over and over again, time and again, time and time again, frequently, often, many times, many a time, time after time, on many occasions, many times over
    repeatedly, again and again, over and over, over and over again, time and again, time and time again, frequently, often, many times, many a time, time after time, day after day, on many occasions, many times over
    View synonyms

Origin

Latin, literally ‘to sickness’.

Pronunciation

ad nauseam

/æd ˈnɔziəm//ad ˈnôzēəm/