unforgettable
[adjective]
Synonyms: memorable, exceptional, impressive, notable

[TahlilGaran] English Synonym Dictionary ▲

un‧for‧get‧ta‧ble /ˌʌnfəˈɡetəbəl◂ $ -fər-/ adjective
[Word Family: adverb: forgetfully, unforgettably; adjective: forgetful, forgettable ≠ unforgettable; verb: forget; noun: forgetfulness]
an unforgettable experience, sight etc affects you so strongly that you will never forget it, especially because it is particularly good or beautiful ⇒ memorable:
A visit to Morocco is a truly unforgettable experience.
—unforgettably adverb

[TahlilGaran] Dictionary of Contemporary English ▲

unforgettable
adj.
VERBS be
ADV. quite, totally, truly It was a truly unforgettable experience.
pretty

[TahlilGaran] Collocations Dictionary ▲