unforgettable (adj.)

• celebrated
• conspicuous
• distinguished
• eminent
• esteemed
• estimable
• exceptional
• extraordinary
• haunting
• indelible
• marked
• memorable
• nagging
• noble
• notable
• noteworthy
• obsessive
• outstanding
• persistent
• prestigious
• prominent
• rare
• recurrent
• remarkable
• reputable
• salient
• signal
• special
• striking
• telling