morale

The company has been struggling and employee morale is low. [=employees do not feel happy or enthusiastic about their work]这家公司一直难以为继，员工士气低落。

The team is playing well and their morale is high.球队打得相当不错，全队现在士气高昂。

The President's speech boosted/raised/improved the morale of the troops.总统的演讲鼓舞了军队的士气。