1. to make someone or something lose balance or stability
2. to disturb the mental or emotional stability of someone

1. a lack of balance or stability

Examples

• The heavy backpack began to unbalance the hiker on the narrow trail.
• Strong winds can unbalance even experienced cyclists.
• The tragic news seemed to unbalance her for several weeks.
• The medication helped correct the chemical unbalance in his brain.
• There was a noticeable unbalance in the team’s offensive strategy.
• The unbalance of the washing machine caused it to shake violently.
• Don’t let one bad grade unbalance your confidence in school.