a lot
again and again
as a rule
chronically
commonly
continually
customarily
day after day
day by day
every so often
generally
habitually
in many instances
inveterately
many a time
many times
many times over
most often
much
not infrequently
not seldom
oft
often
often enough
oftenly
oftentimes
ofttimes
ordinarily
over and over
persistently
recurrently
recurringly
regularly
repeatedly
repetitively
routinely
several times
time after time
time and again
times without number
unseldom
usually
whenever you wish
year after year
infrequently