unusual

bizarre, eccentric, far-out, kooky (also kookie), oddball, outlandish, outré, way-out

aberrant, abnormal, atypical, exceptional, irregular

newsworthy, notable, noteworthy, noticeable, particular, remarkable, special

conspicuous, notable, noticeable, outstanding, prominent, remarkable, salient, striking

bizarre, deviant, eccentric, freakish, monstrous, oddball, outlandish, quaint, strange, weird

incomprehensible, inconceivable, incredible, unimaginable, unthinkable