Not certain
Not sure and not certain are semantically related. In some cases you can use "Not sure" instead an adverb phrase "Not certain".
Not sure
Not certain and not sure are semantically related. You can use "Not certain" instead an adverb phrase "Not sure".
Mutual synonyms
Related pairs
- questionable and not certain
- questionable and not sure
- partially and not certain
- partially and not sure
- weakly and not certain
- weakly and not sure
- incomplete and not certain
- incomplete and not sure
- uncertain and not certain
- uncertain and not sure
- indefinite and not certain
- indefinite and not sure
- incompletely and not certain
- incompletely and not sure
Cite this Source
Not sure and Not certain. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/not_certain/not_sure
Not certain & Not sure. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/not_certain/not_sure>.
Not sure or Not certain. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/not_certain/not_sure.
Google Ngram Viewer shows how "not certain" and "not sure" have occurred on timeline