肆无忌惮 sì wú jì dàn

DEFINITIONS

  1. absolutely unrestrained
  2. unbridled
  3. without the slightest scruple

CHARACTERS

肆 sì indulge; excess; numeral four; particle meaning now, therefore; shop
无 wú negative, no, not; KangXi radical 71
忌 jì jealous, envious; fear
惮 dàn dread, shrink from, shirk, fear