uncertain

[ uhn-sur-tn ]
/ ʌnˈsɜr tn /

adjective

Origin of uncertain

Middle English word dating back to 1250–1300; see origin at un-1, certain
Related formsun·cer·tain·ly, adverbun·cer·tain·ness, noun

Synonym study

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.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for uncertain

British Dictionary definitions for uncertain

uncertain

/ (ʌnˈsɜːtən) /

adjective

not able to be accurately known or predictedthe issue is uncertain
(when postpositive, often foll by of) not sure or confident (about)a man of uncertain opinion
not precisely determined, established, or decideduncertain plans
not to be depended upon; unreliablean uncertain vote
liable to variation; changeablethe weather is uncertain
in no uncertain terms
  1. unambiguously
  2. forcefully
Derived Formsuncertainly, adverbuncertainness, 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

Word Origin and History for uncertain

uncertain


adj.

c.1300, "of indeterminate time or occurrence," from un- (1) "not" + certain (adj.). Meaning "not fully confident" is recorded from late 14c. (implied in uncertainty). Related: Uncertainly.

Online Etymology Dictionary, © 2010 Douglas Harper

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.