意气用事 (yì qì yòng shì) — to act on impulse; to be swayed by personal feelings

Definition

Examples

• 他做决定总是意气用事，不考虑后果。
  Tā zuò jué dìng zǒng shì yì qì yòng shì, bù kǎo lǜ hòu guǒ.
  He always makes decisions on impulse, without considering the consequences.
• 遇到矛盾要冷静，千万不要意气用事。
  Yù dào máo dùn yào lěng jìng, qiān wàn bú yào yì qì yòng shì.
  When you encounter a conflict, stay calm and never act on impulse.
• 他因为意气用事，得罪了不少同事。
  Tā yīn wèi yì qì yòng shì, dé zuì le bù shǎo tóng shì.
  Because he acted on impulse, he offended quite a few colleagues.