Definition of morning after in English:

morning after

noun

informal
  • 1A morning on which a person has a hangover.

    • ‘There are more lessons to be learned, but those are my initial thoughts on this morning after.’
    • ‘The morning after I took my first dose, I woke up with a strange headache.’
    • ‘Then he added, jokingly, ‘It might have been a morning after a frat party.’’
    • ‘One terrible morning after, Andy prepares a remark-able hangover cure for him.’
    1. 1.1A hangover.
      • ‘There is no morning after if the night never ends, so get up and get right back into it.’
    2. 1.2An unpleasant aftermath of imprudent behavior.
      ‘his first year of college was one long party—eventually he would have to face the morning after’
      • ‘There's got to be a morning after, as the line from the disaster movie song goes.’
      • ‘The people have spoken and they have voted for war. there's got to be a morning after there's got to be a morning after…’
      • ‘It's as if Hollywood were experiencing some unusual fabric shortage, and I wouldn't be surprised if a legion of actresses have colds or flus by morning after.’