Définitions
1.VerbTo be overcome with emotion.
To become explosively angry; to lose one's temper."When my dad found out I had failed the exams, he just lost it.; When she heard the news about her cousin's death, she lost it.; When the teacher's chair broke, the class completely lost it."
2.VerbTo become explosively angry; to lose one's temper."When my dad found out I had failed the exams, he just lost it."
3.VerbTo feel devastated, or distraught, especially when one's sadness is overwhelming."When she heard the news about her cousin's death, she lost it."
4.VerbTo begin to laugh uncontrollably."When the teacher's chair broke, the class completely lost it."
5.VerbTo lose one's mind, go crazy.
6.VerbTo 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."
7.VerbTo lose control of a situation. (Can we add an example for this sense?)
8.VerbUsed other than figuratively or idiomatically: see lose, it.