celebration

To observe (a day or event) with ceremonies of respect, festivity, or rejoicing. See Synonyms at observe.

To perform (a religious ceremony): celebrate Mass.

To extol or praise: a sonnet that celebrates love.

To make widely known; display: "a determination on the author's part to celebrate . . . the offenses of another" (William H. Pritchard).

To observe an occasion with appropriate ceremony or festivity.

To perform a religious ceremony.

To engage in festivities: went out and celebrated after the victory.