Rarely and not often
rarely adverb
not often
little adverb, determiner, pronoun
not very often, or only to a small degree
seldom adverb
not often
few and far between phrase
not happening very often or not existing in many places
once or twice phrase
a few times, but not very often
once in a blue moon phrase
very rarely
rare adjective
not happening very often
rarity noun
something that does not happen often