Sure
Sure adjective - Not capable of being challenged or proved wrong.
Usage example: no sure evidence that life exists on other planets
Unchallengeable and sure are semantically related. In some cases you can use "Unchallengeable" instead an adjective "Sure".
Nearby Word: surely
Unchallengeable
Unchallengeable adjective - Not capable of being challenged or proved wrong.
Usage example: the contention that there are certain unchallengeable rules governing proper grammar
Sure and unchallengeable are semantically related. Sometimes you can use "Sure" instead an adjective "Unchallengeable".
Nearby Word: unchallenged
Mutual synonyms
Related pairs
- clear and sure
- clear and unchallengeable
- firm and sure
- firm and unchallengeable
- positive and sure
- positive and unchallengeable
- certain and sure
- certain and unchallengeable
- stable and sure
- stable and unchallengeable
- definite and sure
- definite and unchallengeable
- reliable and sure
- reliable and unchallengeable
Cite this Source
Unchallengeable and Sure. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/sure/unchallengeable
Sure & Unchallengeable. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/sure/unchallengeable>.
Unchallengeable or Sure. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/sure/unchallengeable.
Google Ngram Viewer shows how "sure" and "unchallengeable" have occurred on timeline