• catchup,
• matchush,
• mytchum,
• cacthup,
• caatchup,
• Catghup,
• maayhap,
• natchup,
• machup,
• matchupp,
• machap,
• matshu,
• mutichip,
• Matchuch,
• Watchap,
• Capchuk,
• katichup,
• matcheup,
• cactchup,
• cacthupp

• matchbox,
• matchbush,
• match-up,
• madcap,
• matchbook,
• match play.

The adjective form of the word "matchup" is "matchup".

The plural of the "matchup" can be the "matchups".

The singular of the "matchup" can be the "matchup".