6
uniquely(adverb, nonconformingly)
5
not often(expression, idiom, unusually)
5
extra(adverb, little, uncommon, really, hardly)
5
occasionally(adverb, infrequently)
5
scarcely
5
sporadically(adverb, infrequently)
5
surprisingly(adverb, greatness)
4
amazingly(adverb, greatness)
4
atypically(adverb, nonconformingly)
4
curiously(adverb, greatness, nonconformingly)
4
in few instances
4
incredibly(adverb, greatness, amazingly)
4
really
4
signally(adverb, greatness)
4
sparsely(adverb, infrequently)
4
specially
3
anomalously(adverb, nonconformingly)
3
astonishingly
3
conspicuously
3
eccentrically(adverb, nonconformingly)
11 years ago|7.1k views|share |citing 
APASmart Define. (2015). uncommonly thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/uncommonly/thesaurus/synonyms
ChicagoSmart Define. 2015. "uncommonly thesaurus" https://smartdefine.org/uncommonly/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, uncommonly thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/uncommonly/thesaurus/synonyms>.
MLASmart Define. "uncommonly thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/uncommonly/thesaurus/synonyms>