For an indefinite number of successive days.

synonym: day in day out.

Roget 110: long; for a long time, for an age, for ages, for ever so long, for many a long day; long ago etc. (in a past time) 122; longo intervallo [It].    all the day long, all the year round; the livelong day, as the day is long, morning noon and night; hour after hour, day after day, &c.; for good; permanently etc. adj.. ... show more

Roget 136: often, oft; ofttimes^†, oftentimes; frequently; repeatedly etc. 104; unseldom^†, not unfrequently^†; in quick succession, in rapid succession; many a time and oft; daily, hourly &c.; every day, every hour, every moment &c., perpetually, continually, constantly, incessantly, without ceasing, at all times, daily and hourly, night and day, day and night, day after day, morning noon and night, ever anon, invariably (habit) 613.    most often; commonly etc. (habitually) 613.    sometimes, occasionally, at times, now and then, from time to time, there being times when, toties quoties [Lat.], often enough, when the mood strikes, again and again.    ... show more