1
faltering(unreliable, uneven, variable, erratic, random)
1
fantastic(unusual, special, rare)
1
faulty
1
fitful(adjective, irregular, unreliable, rare, variable)
1
flawed
1
fluctuating(adjective, regular, routine, unreliable, uneven)
1
found wanting
1
fragmentary(unreliable, uneven, variable, erratic, random)
1
freakish(unusual, special, rare)
1
handful
1
hit-or-miss(irregular, erratic, random, haphazard, recurrent)
1
impaired
1
imperceptible
1
imperfect
1
in short supply(expression, adjective, idiom, inadequate, limited)
1
inadequate(adjective, weak, poor, thin, spare)
1
incidental(adjective, chance, irregular, unplanned, unpremeditated)
1
incommensurate
1
incomparable(excellent, unusual, special, brilliant, rare)
1
incompetent
11 years ago|10k views|share |citing 
APASmart Define. (2015). infrequent thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/infrequent/thesaurus/synonyms
ChicagoSmart Define. 2015. "infrequent thesaurus" https://smartdefine.org/infrequent/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, infrequent thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/infrequent/thesaurus/synonyms>.
MLASmart Define. "infrequent thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/infrequent/thesaurus/synonyms>