Of or belonging to or occurring every day(adjective)
WordNet. Princeton University. 2010.
Use "day-after-day" in a sentence
"No amount of reassurance or cajoling can convince a person to respect another – respect only comes through the reality of day-after-day contact."
"Trying to remember how many white faces I saw in the Super Dome day-after-day after Katrina??"
"But on the way to that dramatic ending, the Tour was dismantled by doping scandals — including the blood-doping exclusion of Alexander Vinokourov and the withdrawal of his Team Astana, and the day-after-day rumors about race leader Michael Rasmussen having cheated the pre-Tour anti-doping testers, until he was sent home by his Rabobank team four days before the finish."