Alter | Mean of alter in English Dictionary

/ˈɑːltɚ/

• Verb
• to change (something)
1. Alcohol can alter a person's mood.
2. He altered his will to leave everything to his sister.
3. This one small event altered the course of history.
4. The place has altered in the 10 years since I left.
• to make a change to (a piece of clothing) so that it will fit better
1. I'll need to have/get the dress altered before the wedding.
• to remove the sex organs of (an animal) so that the animal is unable to reproduce
1. They had the puppies altered [=fixed] before they were sold.