one that is equal to another in status, achievement, or value <a design that is a rival to any produced by a professional graphic artist> Synonyms coequal
one that takes a position opposite another in a competition or conflict <the boxer's toughest rival thus far>
one who strives for the same thing as another <the four cities that are the top rivals for the site of the next Olympic Games>
Seen & Heard
What made you want to look up rival[noun]? Please tell us where you read or heard it (including the quote, if possible).