From wake + up.

• (RP, America) IPA: /ˌweɪk ˈʌp/, [ˌweɪˈkʌp]

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.
   • 1913, Joseph C[rosby] Lincoln, chapter VII, in Mr. Pratt’s Patients, New York, N.Y., London: D[aniel] Appleton and Company, →OCLC ↗:

     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.

   • 1967, John Lennon/Paul McCartney, A Day in the Life:

     "Woke up, fell out of bed, dragged a comb across my head"

2. (transitive) To awaken somebody.

   Wake your brother up; it's time for school.

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!

• French: réveiller
• German: aufwachen, erwachen, wach werden
• Italian: svegliarsi
• Portuguese: acordar, despertar
• Russian: просыпа́ться
• Spanish: despertarse, recordar

• French: réveiller
• German: aufwecken, wecken, wach machen
• Italian: svegliare
• Portuguese: acordar, despertar
• Russian: буди́ть
• Spanish: despertar

• German: aufwachen, wach werden, sich bewusst werden
• Portuguese: despertar
• Spanish: despertar, espabilar