Added 9 October 2026
uncertain
/ʌnˈsɜːtən/ adjective
In Latin: incertus, ambiguus Wiktionary
adjective Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about uncertain at Wordnik → Where our words come from →
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Lacking or indicating lack of confidence or assurance.
uncertain of his convictions
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Not established beyond doubt; still undecided or unknown.
an uncertain future
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Not established or confirmed.
his doom is as yet unsealed
Origin
From Middle English uncerteyn. By surface analysis, un- + certain.
From Wiktionary, via Kaikki.org (CC BY-SA)