striking

Synonyms: arresting arrestive astonishing attractive bizarre charming cogent commanding compelling confounding conspicuous dazzling distinguished dynamite electrifying eye-catching fascinating forceful forcible handsome impressive jazzy lofty marked memorable noteworthy noticeable out of the ordinary outstanding powerful prominent remarkable salient showy signal singular staggering startling stunning surprising telling unusual wonderful wondrous

Antonyms: homely horrifying ugly unimpressive