repress -
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"
oppress,
suppress,
crush come down on or keep down by unjust use of one's authority; "The government oppresses political activists"
repress -
block the action of
change undergo a change; become different in essence; losing one's or its original nature; "She changed completely as she grew older"; "The weather changed last night"