[ad naw-zee-uh
m, -am] 
| to a sickening or disgusting degree. |
| ad nau·se·am (ād nô'zē-əm) adv. To a disgusting or ridiculous degree; to the point of nausea. [Latin ad, to + nauseam, accusative of nausea, sickness.] |
To go on endlessly; literally, to continue “to seasickness”: “The candidate told us the details of how he overcame his childhood problems ad nauseam.”
ad nauseam
To ridiculous excess, to a sickening degree. For example, I wish he'd drop the subject; we have heard about budget cuts ad nauseam. The term, Latin for "to [the point of] nausea," has been used in English since the early 1600s.