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Related to instable: subtle, unstable, exasperating


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


(ʌnˈsteɪ bəl)

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.
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.
References in classic literature ?
Recall the commandment, or he will dissolve the castle and it shall vanish away like the instable fabric of a dream!"
Since Ayub khan till the present Government Pakistan has been going through instable economic situations.
Le temps sera nuageux et instable avec des averses de pluies, notamment sur le centre et l'est du pays, jusqu'a samedi, selon les previsions de l'Office national de meteorologie (ONM).