Also means
insuperable
Usage Note
Insuperable can describe both obstacles that cannot be overcome (un obstáculo insuperable) and quality that cannot be surpassed (una oferta insuperable — 'an unbeatable deal'). Context disambiguates. The English 'insuperable' is almost exclusively negative (an insuperable obstacle), but Spanish also uses it positively, making it a partial false friend.
Examples
"Su técnica es simplemente insuperable."
Natural Translation
Her technique is simply unbeatable.

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