remarkable
out of the common
unwontedly
rare as hen's teeth
different
atypical
antrin
unusual
unusualness
unusuality
offbeat
out of the way
uncommon
quaint
strange
distinguishing characteristic
peculiarity
distinctive feature
unique
exotic
uncommonly
freakish
fremd
peculiar
geason
weird
queer as a clockwork orange
mutant
extraordinary
unwonted
normal for Norfolk
rare as a four-leaf clover
oddment
seld
unorthodox
oddly
way-out
unaccustomed
superabnormal
freaky
peculiarsome
isanomal
one in a million
something else
ultrarare
idiosyncratic
sporadic
untypical
rarity
shenanigans