Sure
Sure adjective - Having or showing a mind free from doubt.
Unbeatable and sure are semantically related. In some cases you can use "Unbeatable" instead an adjective "Sure".
Nearby Word: surely
Unbeatable
Unbeatable adjective - Incapable of being defeated, overcome, or subdued.
Sure and unbeatable are semantically related. Sometimes you can use "Sure" instead an adjective "Unbeatable".
Nearby Word: unbeaten
Mutual synonyms
Both words in one sentence
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This is why most villains/threats in shonen appear unbeatable at first and why the more sure of their power a hero seems, the more doomed they are.
Source: Japanese Spirit - Sure, the game stops awarding you after a certain point once you've leveled enough, but the tens of thousands of XP points you receive once you nab the achievements (some of which can be accomplished with 20 minutes of grinding) will give you an unbeatable advantage for most of the game.
Source: Game Breaker / Platform - Liz: Well, sure, 'cause that Verizon Wireless service is just unbeatable.
Cite this Source
Unbeatable and Sure. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/sure/unbeatable
Sure & Unbeatable. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/sure/unbeatable>.
Unbeatable or Sure. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/sure/unbeatable.
Google Ngram Viewer shows how "sure" and "unbeatable" have occurred on timeline