figurative. To be active, alert, stirring, vigilant. Const. as above; also, to be diligent, exert oneself to (do something). to wake over, to…

Of a person: To become lively, animated, or stirring; usually with up. Also, to become ‘alive’ to (a situation, etc.). Cf. wake, v. 7c.

to wake to: to become conscious or aware of; to become ‘alive’ to. Cf. awake, v. 3.

figurative. intransitive. Of a person: to become fully conscious or alert, esp. after sleep.