follow Dictionary.com

What is the X in X-mas?

instable

[in-stey-buh l] /ɪnˈsteɪ bəl/
adjective
1.
not stable; unstable.
Origin
late Middle English
1375-1425
1375-1425; late Middle English < Latin instabilis. See in-3, stable2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Examples from the web for instable
  • People fear vibrations caused by trains will trigger the instable explosives.
  • Those currencies are so instable and weak over the speculations system.
British Dictionary definitions for instable

instable

/ɪnˈsteɪbəl/
adjective
1.
a less common word for unstable
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
Cite This Source
Word Origin and History for instable
adj.

c.1400, from Latin instabilis, from in- "not, opposite of" (see in- (1)) + stabilis (see stable). Now mostly replaced by unstable.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Difficulty index for instable

Few English speakers likely know this word

Word Value for instable

10
13
Scrabble Words With Friends