unfrequent
infrequent
uncommonly
seldom
rarely
unoccasional
occasional
nonfrequent
episodic
unregular
episodicity
nonprevalent
unprevalent
at times
occasionally
once in a while
on occasion
from time to time
now and again
now and then
infrequently
oft
sometimes
patchy
common as pig tracks
casual
periodically
sporadically
unusual
once in a blue moon
I can't remember the last time
unwonted
off and on
uncommonable
semiregular
on and off
noncommonable
uncommonplace
heterochronic
nonrecurrent
unrecurrent
frequent
stated
recurringly
habitually
geason
odd
as often as not
roughly
far from
recurrence
nonsporadic
accidental
punctual
nonrare
nontypical
Sisyphean
oft-repeated
it's not everyday
every so often
nonrecurring
on-again, off-again
intermissive
adventitiously
common
seldomness
on a regular basis
erratically
nonregular
semifrequent
humdrum
unoften
usually
sporadical
monotonous
here and there
uncommon
discontinuously
unruleful
one-off
one-time
every now and then
nonprecedential
unprecedential
regularity
unfrequent
infrequent
unoccasional
occasional
nonfrequent
episodic
unregular
nonprevalent
unprevalent
patchy
common as pig tracks
casual
unusual
unwonted
uncommonable
semiregular
noncommonable
uncommonplace
heterochronic
nonrecurrent
unrecurrent
frequent
stated
geason
odd
nonsporadic
accidental
punctual
nonrare
nontypical
Sisyphean
oft-repeated
nonrecurring
on-again, off-again
intermissive
common
nonregular
semifrequent
humdrum
sporadical
monotonous
uncommon
unruleful
one-time
nonprecedential
unprecedential
uncommonly
seldom
rarely
at times
occasionally
once in a while
on occasion
from time to time
now and again
now and then
infrequently
oft
sometimes
periodically
sporadically
once in a blue moon
off and on
on and off
recurringly
habitually
roughly
far from
every so often
adventitiously
erratically
unoften
usually
here and there
discontinuously
every now and then
episodicity
recurrence
seldomness
one-off
regularity
English words for 'Not frequent; not common; not happening often; infrequent.'
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