肆无忌惮 sìwú-jìdàn absolutely unrestrained
absolutely unrestrained; unbridled; without the slightest scruple
How to remember 肆无忌惮: 肆 to indulge + 无 have not + 忌 jealous + 惮 to fear = absolutely unrestrained.
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How it is used
- 'Utterly unrestrained, without a scruple' - 肆无忌惮地破坏 (sìwú-jìdàn de pòhuài) to wreak havoc with total impunity.
- Strongly negative idiom for brazen, reckless behavior that fears no consequence or shame.
- Formal/condemnatory register; describes flagrant wrongdoing.