肆无忌惮

sìwújìdàn

HSK 7

肆无忌惮 — sìwújìdàn

1. absolutely unrestrained; unbridled; without the slightest scruple

   他肆无忌惮地欺骗顾客，完全不顾道德。 tā sìwújìdàn dì qīpiàn gùkè wánquán bùgù dàodé — He deceived customers without the slightest scruple, showing no regard for morals.