比赛 (bǐ sài) is a noun meaning 'competition' or 'match' — any organized contest where individuals or teams compete to win, such as in sports, academics, or arts. The character 比 (bǐ) originally means 'to compare' or 'to measure against', while 赛 (sài) means 'to compete' or 'a contest'. Together, they emphasize the core idea of structured, rule-based rivalry with a clear goal: determining who performs best.

This word is widely used in everyday Mandarin for both formal and informal settings — from school spelling bees and Olympic events to friendly video game tournaments. It’s neutral in register and commonly appears after classifiers like 一場 (yì chǎng, 'a match') or 一次 (yí cì, 'an instance'). Unlike some English synonyms, 比赛 rarely implies hostility; it carries a positive, spirited connotation of fair play and mutual challenge.