instable
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instable
(ɪnˈsteɪbəl)adj
a less common word for unstable
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
un•sta•ble
(ʌnˈsteɪ bəl)adj.
1. not stable; not firm or firmly fixed; unsteady.
2. liable to change or fluctuate quickly: an unstable weather pattern.
3. marked by emotional instability.
4. unsteadfast; inconstant; wavering.
5. irregular in movement.
6. noting chemical compounds that readily decompose or change into other compounds.
[1175–1225]
un•sta′ble•ness, n.
un•sta′bly, adv.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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