UNCER'TAIN, adjective 1. Not certain; doubtful; not certainly known. it is uncertain who will be the next president. 2. Doubtful; not having certain knowledge. man without the protection of a superior Being - is uncertain of every thing that he hopes for. 3. Not sure in the consequence. Or whistling slings dismiss'd the uncertain stone. 4. Not sure; not exact. Soon bent his bow, uncertain in his aim. 5. Unsettled; irregular.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI