punctual
on and off
semiperiodic
every so often
quasiperiodic
on-again, off-again
harmonic
forever
periodically
by fits and starts
periodic
now and then
once in a while
on occasion
now and again
constantly
at times
from time to time
habitually
occasionally
here and there
periodical
come around
roll around
time and time again
time and again
on a regular basis
oft-repeated
recurringly
stated
episodic
semiregular
a lot
much
recurrence
on an irregular basis
heterochronic
intermittently
semifrequent
on the regular
always
once in a way
common
frequently
all the time
thick
oft
accidental
occasional
every now and then
regular recurrence
often
rhythm
cyclical
periodicity
pseudorepetitive
infrequent
persistent
constant
recurring
every second
episodicity
semi-weekly
sporadic
in fits and starts
rare
until Kingdom come
stop-start
choppy
return
cyclically
severally
over and over
over and over again
perpetually
high-frequency
recurrent
incessantly
ever
manifold
adventitiously
sometime
incessably
continual
many a times
insistent
repetitive
punctual
semiperiodic
quasiperiodic
on-again, off-again
harmonic
periodic
periodical
oft-repeated
stated
episodic
semiregular
heterochronic
semifrequent
common
accidental
occasional
cyclical
pseudorepetitive
infrequent
persistent
constant
recurring
semi-weekly
sporadic
rare
stop-start
choppy
high-frequency
recurrent
ever
sometime
continual
insistent
repetitive
on and off
every so often
forever
periodically
by fits and starts
now and then
once in a while
on occasion
now and again
constantly
at times
from time to time
habitually
occasionally
here and there
time and time again
time and again
recurringly
a lot
much
intermittently
on the regular
always
once in a way
frequently
all the time
thick
oft
every now and then
often
every second
cyclically
severally
over and over
over and over again
perpetually
incessantly
manifold
adventitiously
incessably
many a times
recurrence
regular recurrence
rhythm
periodicity
episodicity
return
come around
roll around
English words for 'Periodic; occasional.'
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