HSK 6
Correct

肆无忌惮

/ sì wú jìdàn /
Strokes

Definition

absolutely unrestrained/unbridled/without the slightest scruple

Example

Definition

be audacious and unprincipled; be unscrupulous; be reckless and unbridled; stop/scruple at nothing; have no scruples at all; run riot

1
dàn
肆无忌惮
de
qīnlüè
侵略
xíngwéi
行为

act of wanton aggression