Top (one)self British phrasal verb informal slang
Use to perform the act of killing yourself deliberately, commit a suicide.
Everyone was shocked that he topped himself yesterday.
Due to the financial burden and the hectic schedule, she topped herself.
After breaking up, that guy topped himself in his room.
Used when you to take too much of something at one time, so that it is dangerous.
Cô ấy dùng thuốc quá liều.
These guys have topped themselves with alcohol.
To outperform everyone's previous success or effort or do something better than another people experienced.
Speaking frankly, you've really topped yourself with the competition.
Mary topped herself with these chocolate cakes.
To die or pass away
1. To pass away
2. To depart suddenly
1. One's success has gone down or ended.
2. One has passed away.
To die
The verb "top" should be conjugated according to its tense.
She will top herself if no one believes in her. Therefore, don’t make any pressure on her.
The origin of this expression is not clear.