The chess grandmaster's combination of deep calculation and psychological insight made his defense nearly unbeatable in tournament play.
这位国际象棋大师将深度计算与心理洞察相结合，使他的防守在比赛中几乎无敌。
Which choice best defines “unbeatable”?
B — Impossible to defeat. “unbeatable” means impossible to defeat.
Which word means “impossible to defeat”?
C — unbeatable. “unbeatable” means impossible to defeat.
unbeatable — impossible to defeat. In Chinese: 无敌的.
unbeatable is pronounced /ʌnˈbiːtəbl/.
The chess grandmaster's combination of deep calculation and psychological insight made his defense nearly unbeatable in tournament play. (这位国际象棋大师将深度计算与心理洞察相结合，使他的防守在比赛中几乎无敌。)
invincible, unconquerable, indomitable — all close in meaning to unbeatable (impossible to defeat).
beatable, vulnerable — each the opposite of unbeatable (impossible to defeat).
Yes. unbeatable is on the SAT Prep Basic list — the everyday academic words the SAT assumes you already have. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.