Definition of "unbalance" []

• To upset the balance, stability, or equilibrium of: "By being too good a singer, too hell-bent an actress, and too strong a presence, the star unbalances the proceedings” ( John Simon). (verb-transitive)
• To derange (the mind). (verb-transitive)
• The condition of being unbalanced. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Forcing small businesses to take on the same costs and tax burdens as national retail businesses is unrealistic, unfair and will "unbalance the playing field" between giant retailers and small-business retailers on the Internet, Mr. Cohen said at Wednesday's hearing."
• "Our experience of Harold Pinter's The Dumb Waiter, directed by Landon Johnson for Vespertine Productions at The Flight Theatre at The Complex Theatres, is not so much that of a fly on a wall; a fly's buzz would unbalance Johnson's tersely orchestrated suspense tale of two hit men in a Birmingham basement."
• "Molecule man Vs. Sentry the battle of the unbalance minds"