The action or state of keeping careful watch for possible danger or difficulties: security duties that demand long hours of vigilance
More example sentences
- Constant vigilance is the only possible response to the terrifying Rise of The Machines.
- In a situation that we face today constant vigilance and care are imperative.
- The watch and vigilance of the learned members of the judiciary effectively supplements their role.
late 16th century: from French, or from Latin vigilantia, from vigilare 'keep awake', from vigil (see vigil).