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Nostalgia vs Undefined - What's the difference?

nostalgia | undefined |

As a noun nostalgia

is nostalgia.

As an adjective undefined is

lacking a definition or value.

nostalgia

English

Noun

(en noun)
  • A longing for home or familiar surroundings; homesickness.
  • A bittersweet yearning for the things of the past.
  • *{{quote-magazine, date=2013-08-16, author=(Oliver Burkeman)
    • , volume=189, issue=10, page=20, magazine=(The Guardian Weekly) , title= This is the cutest article , passage= I can't have been the only person, last week, to feel a rush of nostalgia upon learning that Thames Water had removed a bus-sized, 15-tonne lump of food fat ("mixed with wet wipes") from the sewers under London. The fatberg was an August news story redolent of the old-fashioned silly season.}}
  • Reminiscence of the speaker's childhood or younger years.

    • Derived terms

    * nostalgic * nostalgically

    See also

    * halcyon days * hark back * memory lane * reminiscence ----

    undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
    • The result of division by zero is undefined .

    Antonyms

    * defined