lose it

lose it (third-person singular simple present loses it, present participle losing it, simple past and past participle lost it)

(informal) To be overcome with emotion.
1. (informal) To become explosively angry; to lose one's temper.
  When my dad found out I had failed the exams, he just lost it.
2. (informal) To feel devastated, or distraught, especially when one's sadness is overwhelming.
  When she heard the news about her cousin's death, she lost it.
3. (informal) To begin to laugh uncontrollably.
  When the teacher's chair broke, the class completely lost it.
4. (informal) To lose one's mind, go crazy.
(informal) To cease to have a skill or ability, to lose one's touch, to be washed up.
When you think about all she's done for the sport, it's kind of sad, but she's completely lost it over the past few years.
(idiomatic) To lose control of a situation. (Can we add an example for this sense?)
- 2023 September 1, Aubrey Allegretti, “‘She’s totally lost it’: inside story of the unravelling of Liz Truss’s premiership”, in The Guardian‎, →ISSN:
  Even then, she defended everything she had sought to achieve, saying she had “the right policies at the wrong time”. “That’s when I thought ‘she’s totally lost it’,” said a former aide.
Used other than figuratively or idiomatically: see lose,‎ it.
- 2015, Chris Nickson, Two Bronze Pennies, Severn House Publishers, →ISBN:
  ‘I’m Inspector Harper, Leeds police. Where did you lose it?’ / ‘Lose it?’ He laughed. ‘I’d never lose this. It was stolen.’

to lose one's temper

English