pejorative — having a disparaging, derogatory, or belittling effect or force: the pejorative affix -ling in princeling.
noun downgrading
subjugation — the act, fact, or process of subjugating, or bringing under control; enslavement: The subjugation of the American Indians happened across the country.
reduction — the act of reducing or the state of being reduced.
demotion — to reduce to a lower grade, rank, class, or position (opposed to promote): They demoted the careless waiter to busboy.
degradation — You use degradation to refer to a situation, condition, or experience which you consider shameful and disgusting, especially one which involves poverty or immorality.
depreciation — the reduction in value of a fixed asset due to use, obsolescence, etc
marginalization — to place in a position of marginal importance, influence, or power: the government's attempts to marginalize criticism and restore public confidence.
