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From our dictionary:
Pronunciation: (an"ti-klI'maks), [key]
1. an event, conclusion, statement, etc., that is far less important, powerful, or striking than expected.
2. a descent in power, quality, dignity, etc.; a disappointing, weak, or inglorious conclusion: After serving as President, he may find life in retirement an anticlimax.
3. a noticeable or ludicrous descent from lofty ideas or expressions to banalities or commonplace remarks: We were amused by the anticlimax of the company's motto: âFor God, for country, and for Acme Gasworks.â