(v)deoxidize, deoxidise, reduceto 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
(v)repress, quash, keep down, subdue, subjugate, reduceput 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”