infrequent
[adjective]
Synonyms: occasional, few and far between, once in a blue moon, rare, sporadic, uncommon, unusual

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Antonyms: frequent
Contrasted words: abundant, common, numerous, regular, ordinary, routine
Related Idioms: few and far between
Related Words: isolated, scattered, meager, scant, scanty, sparse, exceptional, limited, unusual, odd, spasmodic, stray

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English Thesaurus: rare, scarce, not common, infrequent, be few and far between, ...

[TahlilGaran] English Synonym Dictionary ▲

in‧fre‧quent /ɪnˈfriːkwənt/ adjective
[Word Family: verb: frequent; noun: frequency ≠ infrequency; adverb: frequently ≠ infrequently; adjective: frequent ≠ infrequent]
not happening often Synonym : rare Antonym : frequent:
They would make infrequent visits to the house.
—infrequency noun [uncountable]

[TahlilGaran] Dictionary of Contemporary English ▲

infrequent
adj.
VERBS be | become
ADV. very | comparatively, fairly, rather, relatively Disturbances are relatively infrequent in British prisons.

[TahlilGaran] Collocations Dictionary ▲

rare not existing in large numbers or in large amounts:
The law prevents the export of rare birds.
The plates are quite rare. Only about a hundred were made.
scarce not available in large enough numbers or amounts at a particular time – used especially about things people need:
After the war, food and clothing were scarce.
People are having to compete for scarce resources.
not common [not before noun] fairly rare:
Silver coins of this period are not common, and could be very valuable.
infrequent formal not happening often:
As time went on, her visits became more and more infrequent.
be few and far between to not be common – especially much less common than you might expect:
Luckily, accidents such as these are few and far between.
Bargains are, unfortunately, few and far between.
be (something of) a rarity if something or someone is a rarity, it is surprising to find one, because very few exist:
Women are still something of a rarity in senior management positions.
be like hen’s teeth informal to be extremely rare:
Good Greek restaurants are like hen’s teeth around here.

[TahlilGaran] English Thesaurus ▲