usage: the sterilization of an animal; "they took him to the vet for neutering"
1. change, alter, modify
usage: 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"
2. change, alter, vary
usage: 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"; "The supermarket's selection of vegetables varies according to the season"
3. alter, change, alter, modify
usage: make an alteration to; "This dress needs to be altered"
4. interpolate, alter, falsify, edit, redact
usage: insert words into texts, often falsifying it thereby