1. to be without balance or stability, either physically or metaphorically
The economy began to lack equilibrium after the market crash.
A economia começou a carecer de equilíbrio após o crash do mercado.
2. to be in a state of imbalance or disequilibrium
The tightrope walker started to lack equilibrium midway across.
O equilibrista começou a carecer de equilíbrio no meio do trajeto.