Learner's definition of CHAOS
[noncount]
1
: complete confusion and disorder : a state in which behavior and events are not controlled by anything混乱；杂乱；紊乱 -
The loss of electricity caused chaos throughout the city.停电造成整个城市一片混乱。
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When the police arrived, the street was in total/complete/absolute chaos.警察到来时，街道混乱不堪。
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The country had descended into economic chaos.国家已陷入经济混乱。
2
: the state of the universe before there was any order and before stars and planets were formed混沌（世界）