| 单词 | vigilant |
| 释义 | vigilant —vigilantly, adv. —vigilantness, n. /vij"euh leuhnt/, adj. 1. keenly watchful to detect danger; wary: a vigilant sentry. 2. ever awake and alert; sleeplessly watchful. [1470-80; < L vigilant- (s. of vigilans), prp. of vigilare to be watchful. See VIGIL, -ANT] Syn. 2. wide-awake, sleepless. See alert. Ant. 1. careless. |
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