Anniversary

//ˌænɪˈvɝs(ə)ɹi// noun

noun ·Moderate ·High school level

Definitions

Noun
  1. 1
    A day that is an exact number of years (to the day) since a given significant event occurred. Often preceded by an ordinal number indicating the number of years.

    "Today is the fiftieth anniversary of the end of the war."

  2. 2
    the date on which an event occurred in some previous year (or the celebration of it) wordnet
  3. 3
    A day that is an exact number of years (to the day) since a given significant event occurred. Often preceded by an ordinal number indicating the number of years.; Such a day that commemorates a wedding. especially

    "We are celebrating our tenth anniversary today."

  4. 4
    A day subsequent in time to a given event by some significant period other than a year (especially as prefixed by the amount of time in question). broadly

    "The occasion was the six-month anniversary of the Aug. 8 coup that brought General Óscar Humberto Mejía Victores to power."

Synonyms

All synonyms
admission dayanniversariesannual holidayarbor dayarmed forces dayarmistice day

Example

More examples

"We celebrated the centenary anniversary day."

Etymology

From Middle English anniversary, from Medieval Latin anniversāria (diēs), anniversārium, from anniversārius (“yearly”), from annus (“year”) + versus, past participle of vertere (“to turn”).

Related phrases

anniversary clockanniversary daydiamond anniversarygolden anniversarypaper anniversaryplatinum anniversaryruby anniversarysilver anniversarytin anniversarywood anniversarywooden anniversaryordinal number

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.