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"

renormalise, renormalize, normalise, normalize - make normal or cause to conform to a norm or standard; "normalize relations with China"; "normalize the temperature"; "normalize the spelling"

alter, change, 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"

normalise, normalize - become normal or return to its normal state; "Let us hope that relations with this country will normalize soon"

toughen - make tough or tougher; "This experience will toughen her"