periodic
periodical
annual
biannual
biennial
bimonthly
biweekly
catamenial
centenary
centennial
daily
decennial
diurnal
fortnightly
hebdomadal
hourly
menstrual
momentary
momently
monthly
quarterly
quotidian
secular
semestral
semiannual
semimonthly
semiyearly
tertian
triennial
weekly
yearly
serial
serial publication
series
advance-decline
bazillion
can't-miss
celeb-obsessed
ellynika'
five-shilling
misc
non-biased
non-ip
sweary
vapour-bath
weigh-in
well-observed
world...and