from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Not firm, solid, or securely in place; unstable.
- adj. Fluctuating; changeable: an unsteady market.
- adj. Not even or regular; wavering: an unsteady voice.
- transitive v. To cause to become unsteady.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Not held firmly in position, physically unstable.
- adj. Noted for lack of regularity or uniformity.
- adj. Inconstant in purpose, or volatile in behaviour.
- v. To render unsteady, removing balance.
from The Century Dictionary and Cyclopedia
- In mech., having a motion which is not uniform or which does not take place with a constant angular velocity, or around a permanent axis through the center of gravity of the mass. Revolving bodies out of running balance have an unsteady motion.
- Not steady.
- To make unsteady; cause to be fluctuating.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. subject to change or variation
- adj. not firmly or solidly positioned
Created by adding the prefix un- to steady. Like steady, the word first appeared in English around 1530. The word is comparable to the Old Frisian onstedich, the Low German unstadig etc. (Wiktionary)