altering

the sterilization of an animal

they took him to the vet for neutering

cause to change; make different; cause a transformation

The advent of the automobile may have altered the growth pattern of the city

become different in some particular way, without permanently losing one's or its former characteristics or essence

her mood changes in accordance with the weather

make an alteration to

This dress needs to be altered

insert words into texts, often falsifying it thereby