不假思索 bù jiǎ sī suǒ

DEFINITIONS

  1. to act without taking time to think (idiom); to react instantly
  2. to fire from the hip

CHARACTERS

不 bù
HSK 1
no, not; un-; negative prefix
假 jiǎ
HSK 3
falsehood, deception; vacation
思 sī
HSK 2
think, consider, ponder; final particle
索 suǒ
HSK 5
large rope, cable; rules, laws; to demand, to exact; to search, inquire; isolated