Hard
Hard adjective - Having been established and usually not subject to change.
Usage example: there isn't always a hard line between right and wrong
Uncertain
Uncertain adjective - Likely to change frequently, suddenly, or unexpectedly.
Nearby Words: uncertainty, uncertainly
Both words in one sentence
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Uncertain Doom: Mongo punches Taggert so hard that he's sent flying headfirst into a cash register.
Source: Film / Blazing Saddles - The Duke swats Edmund down hard, to the point where it's uncertain if Edmund survived.
Source: Inspirational Martyr - The future is always uncertain and painful but it must be lived, and this is very hard for Ryouta to accept.
Source: Hope Is Scary
Cite this Source
Uncertain and Hard. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/hard/uncertain
Hard & Uncertain. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/hard/uncertain>.
Uncertain or Hard. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/hard/uncertain.
Google Ngram Viewer shows how "hard" and "uncertain" have occurred on timeline