wake up

Verb

wake up (third-person singular simple present wakes up, present participle waking up, simple past woke up or waked up, past participle woken up or waked up)

1. (intransitive) To stop sleeping; to awake.
   • I made a speaking trumpet of my hands and commenced to whoop “Ahoy!” and “Hello!” at the top of my lungs. […] The Colonel woke up, and, after asking what in brimstone was the matter, opened his mouth and roared “Hi!” and “Hello!” like the bull of Bashan.1913, Joseph C[rosby] Lincoln, chapter VII, in Mr. Pratt’s Patients, New York, N.Y.; London: D[aniel] Appleton and Company, →OCLC
   • "Woke up, fell out of bed, dragged a comb across my head"1967, John Lennon/Paul McCartney, A Day in the Life
2. (transitive) To awaken somebody.
   • Wake your brother up; it's time for school.
   • It had been his intention to go to Wimbledon, but as he himself said: “Why be blooming well frizzled when you can hear all the results over the wireless.[…]You stand by, Janet, and wake me up if they do any of that running commentary stuff.”1935, George Goodchild, chapter 3, in Death on the Centre Court
3. (intransitive) To become more aware of a real-life situation; to concentrate on the matter in hand.
   • Some businesses were slow to wake up to the importance of the Internet.
   • That's the third time you've made the same mistake. Wake up!