unforgettable

UK: ˌʌnfəˈɡetəbl | US: ˌʌnfərˈɡetəbl

Definition

  1. adj. impossible to forget; leaving a lasting impression

Structure
un <not>forget <fail to remember>able <capable of>
Etymology

The word "unforgettable" combines three morphemes:

  1. "Un-" (Old English "un-"), a prefix meaning "not," negates the root.
  2. "Forget" (Old English "forgietan"), meaning "to fail to remember," derives from Proto-Germanic *fergetan.
  3. "-able" (Latin "-abilis"), a suffix indicating capability, turns the verb into an adjective.
    The logical progression is: "not" + "able to be forgotten" → "impossible to forget."
Examples

  1. Her performance was truly unforgettable.

  2. The trip to the mountains left an unforgettable impression on me.

  3. That song is so catchy, it's unforgettable.

  4. He gave an unforgettable speech at the ceremony.

  5. The sunset over the ocean was an unforgettable sight.