- The definition of unforgettable is something unlikely to leave your mind any time soon.
A song that really moved you and changed the way you look at music and that you think back on often is an example of a song that would be described as unforgettable.
unforgettable definition by Webster's New World
- unforgettably adverb
unforgettable definition by American Heritage Dictionary
- unˌfor·getˌta·bilˈi·ty, unˌfor·getˈta·ble·ness noun
- unˌfor·getˈta·bly adverb