Also found in: Thesaurus, Medical, Encyclopedia.
adj. un·sta·bler, un·sta·blest
a. Tending strongly to change: unstable weather.
b. Not constant; fluctuating: unstable vital signs.
a. Wavering or fickle: At first, he was unstable in his decisions.
b. Showing or marked by erratic or volatile emotions or behavior.
3. Not firmly placed; unsteady: an unstable ladder.
a. Decomposing readily.
b. Highly or violently reactive.
a. Decaying with relatively short lifetime. Used of subatomic particles.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Switch to new thesaurus
|Noun||1.||unstableness - the quality or attribute of being unstable and irresolute|
unsteadiness - the quality of being unsteady--varying and unpredictable
shakiness - the quality of being unstable and insecure; "the shakiness of the present regime"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
1. The quality or condition of being physically unsteady:
The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.