What does unbalance mean?
Unbalance can be a verb or a noun, though the verb is more common in contemporary usage. As a verb, it means to disturb something’s balance, stability, or equilibrium: an accident may unbalance a machine, while an unexpected event may unbalance a market or political system. In its second verbal sense, it means to counteract an opposing influence or force. As a noun, an unbalance is a condition in which something is uneven, unstable, or improperly balanced. The word commonly appears in formal and technical contexts rather than casual conversation. It is also easily confused with imbalance, but the distinction is subtle: unbalance often emphasizes the process of disruption or loss of stability, whereas imbalance more commonly refers to the unequal state that results. Both can apply to physical objects, finances, institutions, and relationships.
To disturb the balance or equilibrium of something, making it uneven or unstable; also, to counteract an opposing force or influence.
"The proposed reform could unbalance the delicate balance of power in the region."
Usually transitive and formal; in financial, political, and technical writing, it can mean to offset or counteract a competing influence.
A lack, loss, or unevenness of balance in a physical system, organization, or set of opposing forces.
"The technicians corrected a slight unbalance in the rotating platform."
The noun is comparatively uncommon, especially in informal usage, where imbalance or lack of balance may be preferred.
The plural is grammatically regular but uncommon because the noun itself is less frequent than the verb.
"The report noted several unbalances in the distribution of funds."
One small unbalance can be a wobble; a large one can unsettle an entire market.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does unbalance come from?
English unbalance was formed in the early 17th century by combining the prefix un- with the earlier word balance. Balance itself entered Middle English from Old French and was ultimately associated with the Latin vocabulary of scales and beams. The prefix contributes the sense of reversing, undoing, or failing to maintain the balance described by the root, and the modern verb developed senses involving both physical instability and the disruption of equilibrium in wider systems.
Related word forms
How unbalance is actually used
The verb is formal and somewhat technical, especially when describing physical systems, markets, institutions, or competing forces. The noun is less common; in ordinary English, imbalance is often more idiomatic for a disparity or lack of equilibrium, while unbalance tends to emphasize disruption or instability.
Easily confused with unbalance
Unbalance usually means the act or process of disturbing equilibrium, whereas imbalance more often names the resulting unequal or disproportionate state.