S: (v) change, alter, modify (cause to change; make different; cause a transformation) "The advent of the automobile may have altered the growth pattern of the city"; "The discussion has changed my thinking about the issue"
S: (v) deoxidize, deoxidise, reduce (to remove oxygen from a compound, or cause to react with hydrogen or form a hydride, or to undergo an increase in the number of electrons)
S: (v) reduce, tighten (narrow or limit) "reduce the influx of foreigners"
S: (v) repress, quash, keep down, subdue, subjugate, reduce (put down by force or intimidation) "The government quashes any attempt of an uprising"; "China keeps down her dissidents very efficiently"; "The rich landowners subjugated the peasants working the land"