unremarkable

curious, funny, peculiar, quaint, queer

aberrant, anomalous, atypical, irregular, untypical

rare, scarce

fantastic (also fantastical), phenomenal

bizarre, far-out, outrageous, wacky (also whacky), way-out, weird, wild

eccentric, idiosyncratic, kooky (also kookie), nonconformist, oddball, offbeat, unconventional, unorthodox

freak, freakish

conspicuous, notable, outstanding, prominent, salient, signal, striking, unexampled, unprecedented

singular, unique, unparalleled