intransitive. To come into a state of existence or activity comparable to life. With to, into, with.

intransitive. To become animated, brighten up. Obsolete.

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

intransitive. With up. To become lively or alert; (also transitive (reflexive)) to rouse oneself.

Chiefly with up. Now chiefly North American. intransitive. To become more lively, sharp, or clever; (also) = to wise up at wise, v.2 1.

In present participle to keep (someone or something) hopping: to keep active, busy, or lively; similarly, to be (get,etc.) hopping. colloquial…

intransitive. figurative. To be or become excited, lively, or active. Cf. perk, v.3 2b.