Insurmountable
Insurmountable adjective - Incapable of being defeated, overcome, or subdued.
Usage example: the familiar story of the underdog who ultimately triumphs despite insurmountable odds
Secure and insurmountable are semantically related. In some cases you can use "Secure" instead an adjective "Insurmountable".
Nearby Word: insurmountability
Secure
Secure adjective - Having or showing great faith in oneself or one's abilities.
Insurmountable and secure are semantically related. Sometimes you can use "Insurmountable" instead an adjective "Secure".
Mutual synonyms
Both words in one sentence
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In Naruto, this is what happened with Obito — while he was undoubtedly buried under a ton of rock and understandably believed to be killed, his team was unable to secure his corpse due to both their mission and the insurmountable amount of debris that had crushed his body.
Source: Never Found the Body
Cite this Source
Secure and Insurmountable. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/insurmountable/secure
Insurmountable & Secure. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/insurmountable/secure>.
Secure or Insurmountable. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/insurmountable/secure.
Google Ngram Viewer shows how "insurmountable" and "secure" have occurred on timeline