This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. The act or process of deteriorating or declining.

n. Biology A return to a less complex or more primitive state or stage.

n. A deterioration or decline to a previous state

n. A return to a less complex condition

n. The act of retrograding, or going backward; retrogradation.

n. Backward development; a passing from a higher to a lower state of organization or structure, as when an animal, approaching maturity, becomes less highly organized than would be expected from its earlier stages or known relationship. Called also retrograde development, and regressive metamorphism.

n. The act of going backward; retrogradation.

n. In astronomy, same as retrogradation.

n. In biology, backward development; degeneration; retrograde metamorphosis.

n. returning to a former state

n. passing from a more complex to a simpler biological form

"Though a retrogression is over this year as well as people had some -! more tim e to regulate their spending as well as selling habits, Black Friday 2009 will not be so big."

reversal   

retrogressive   

retrograde development    regressive metamorphism   

retrogradation    recession    decline    degeneration   

retrogradation    decadence    degeneracy    dilapidation    declension    vitiation    deterioration    impoverishment    degeneration    serfage