The phrase "disturb balance" refers to a state where a system or situation becomes unstable or gets disrupted. Synonyms for this phrase include destabilize, unsettle, upset, unbalance, sabotage, throw off, derail, and disorient. These words all have a similar meaning, indicating that something is causing a disruption to the current state of equilibrium or harmony. Other commonly used synonyms for this phrase include interrupt, interfere, hinder, and impede. Depending on the context, any of these words may be used to express a disturbance of balance, either in physical objects, social situations, or mental states.