uncertain
UK /ʌnˈsɜːtən/ · US /ʌnˈsɜɹ.tən/ adjective, noun
Forms uncertainer uncertainest
- adjective Not certain; unsure.
- adjective Not known for certain; questionable. “Tomorrow's weather is uncertain.”
- adjective Not yet determined; undecided.
- adjective Variable and subject to change.
- adjective Fitful or unsteady.
- adjective Unpredictable or capricious.
- noun (with "the") Something uncertain; everything uncertain. “Their approach to the uncertain is laudable: they at least want to know the upper and lower bounds for what the answer could turn out to be.”
Synonyms
unascertained shaky uncertainty uncertainties unsure incertain unsealed changeable unsettled
Antonyms
Etymology
From Middle English uncerteyn. By surface analysis, un- + certain.
Webster’s 1913
- adjective Not certain; not having certain knowledge; not assured in mind; distrustful. Chaucer.
- adjective Irresolute; inconsonant; variable; untrustworthy; as, an uncertain person; an uncertain breeze.
- verb To make uncertain. [Obs.] Sir W. Raleigh.
Etymology [Pref. un- + certain. Cf. Incertain.]
Etymology [1st pref. un- + certain; or fr. uncertain, a.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “uncertain”, CC BY-SA 4.0. Details