uncertain

[ uhn-sur-tn ]
See synonyms for uncertain on Thesaurus.com
adjective
  1. not definitely ascertainable or fixed, as in time of occurrence, number, dimensions, or quality.

  2. not confident, assured, or free from hesitancy: an uncertain smile.

  1. not clearly or precisely determined; indefinite; unknown: a manuscript of uncertain origin.

  2. vague; indistinct; not perfectly apprehended: an abstruse novel with uncertain themes.

  3. subject to change; variable; capricious; unstable: a person of uncertain opinions.

  4. ambiguous; unreliable; undependable: Her loyalties are uncertain.

  5. dependent on chance or unpredictable factors; doubtful; of unforeseeable outcome or effect.

  6. unsteady or flickering, as light; of changing intensity or quality.

Origin of uncertain

1
First recorded in 1250–1300; Middle English; un-1 + certain

synonym study For uncertain

1. Uncertain, insecure, precarious imply a lack of predictability. That which is uncertain is doubtful or problematical; it often involves danger through an inability to predict or to place confidence in the unknown: The time of his arrival is uncertain. That which is insecure is not firm, stable, reliable, or safe, and hence is likely to give way, fail, or be overcome: an insecure foundation, footing, protection. Precarious suggests great susceptibility to failure, or exposure to imminent danger: a precarious means of existence.

Other words for uncertain

Other words from uncertain

  • un·cer·tain·ly, adverb
  • un·cer·tain·ness, noun

Words Nearby uncertain

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use uncertain in a sentence

British Dictionary definitions for uncertain

uncertain

/ (ʌnˈsɜːtən) /


adjective
  1. not able to be accurately known or predicted: the issue is uncertain

  2. (when postpositive, often foll by of) not sure or confident (about): a man of uncertain opinion

  1. not precisely determined, established, or decided: uncertain plans

  2. not to be depended upon; unreliable: an uncertain vote

  3. liable to variation; changeable: the weather is uncertain

  4. in no uncertain terms

    • unambiguously

    • forcefully

Derived forms of uncertain

  • uncertainly, adverb
  • uncertainness, noun

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Idioms and Phrases with uncertain

uncertain

see in no uncertain terms.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.