dead donkey
rareness
uncommon
ultrarare
rare
unique
extraneity
geason
unusual
uncommonness
seldomness
attenuate
rareish
rare as a four-leaf clover
rocking horse shit
anomalism
semiobscurity
semirare
sporadic
rarer than hens' teeth
rarity
not grow on trees
remarkable
rare as rocking horse shit
ugliness
inapplicability
unusualness
sporadicalness
sparsistent
sporadical
rarefactional
uncommonly
some something or other
unusuality
mystery
uncongeniality
miscegenative
unmiraculous
antrin
something or other
tenebrose
rarefiable
miscegenic
peculiar
obtrusiveness
miscegenistic
retrieveless
deal
simulacrum
raresome