One of the mysteries of the English language finally explained.
1Suffer an emotional breakdown under pressure.
break down, have a breakdown, lose control, be overcome, collapse, go to pieces, go out of one's mind, go mad, crumble, disintegrateView synonyms
- ‘I was short-tempered and I was cracking up a bit under the pressure of it all.’
- ‘‘If I had not had Diana and the children I would have cracked up and had a mental breakdown by now,’ he said.’
- ‘Many of us are visibly cracking up after serving two years.’
- ‘He left the club having exhibited signs that he was cracking up under the strain months before.’
- ‘His stylish arthouse flick looks at three women as they crack up.’
- ‘The guys had cracked up so hard, but I was just very traumatized.’
2Burst or cause to burst into laughter.
burst out laughing, dissolve into laughter, roar with laughter, shake with laughter, laugh uncontrollably, guffaw, be doubled up, split one's sides, hold one's sidesView synonyms
- ‘This time I can't hold back my laughter and I crack up.’
- ‘He shut the door in his face and led Mystie back to his room where they cracked up and collapsed on his bed.’
- ‘We were laughing so hard that we just fell over cracking up, unable to control ourselves any longer.’
- ‘Beth cracks up and falls back down onto the towel.’
- ‘He heard the whole class with the exception of her friends crack up laughing.’
- ‘Melissa narrowed her eyes and glared at the two guys, who were cracking up with laughter.’
- ‘He blushed furiously, and Alex cracked up with laughter.’
- ‘Luckily, it's hard to get too stressed when you're trying to stop yourself cracking up with laughter.’
- ‘"Oh Jesus " Alice said wearily and then cracked up laughing.’
- ‘He cracks up into laughter, his shoulders heaving uncontrollably.’
- ‘I really cracked up in laughter when I read the headline ‘Protest is the backbone of democracy’.’
- ‘I could tell the elder student wanted to crack up in laughter about then, but prevented himself from doing so with a mere smile.’
- ‘Stuart standing there is too much for the security guard and he cracks up laughing.’
- ‘All it takes is for one person to crack up and we all collapse.’
- ‘Ancestral forms of play and laughter existed in other animals long before humans began cracking up.’
- ‘Kayla heard them cracking up into laughter from her spot in the kitchen.’
- ‘Lila said and the girls started cracking up with laughter.’
- ‘Before I knew it I was buzzed and cracking up with laughter.’
- ‘Jules mouth was hanging open while Brad looked like he would burst out cracking up any moment.’
- ‘Then without warning, instead of blowing up, she started cracking up in hysterical laughter.’
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