1. To cease to have authority, control, or leadership over a group, situation, or organization
The manager began to lose command when the team stopped respecting his decisions.
O gerente começou a perder o comando quando a equipe parou de respeitar suas decisões.
2. To fail to maintain control in a military or leadership context
The general lost command of his troops during the retreat.
O general perdeu o comando de suas tropas durante a retirada.