1. Someone who is well suited to someone else, especially as a romantic partner. We're actually a perfect match for one another, despite our differences in personality—maybe even because of those differences. I think he would be a good match for you—just go on one date and see how you get on!

2. Someone who able to stand up to or compete against someone else with equal strength or skill. Often used in negative constructions. They've had an impressive run this season, but the young team is just no match for the returning champions. No one put much faith in the young defense attorney, but he has proven a match for the state prosecutor.