信口胡说 xìn kǒu hú shuō

DEFINITIONS

  1. to speak without thinking
  2. to blurt sth out

CHARACTERS

信 xìn trust, believe; letter
口 kǒu mouth; open end; entrance, gate
胡 hú recklessly, foolishly; wildly
说 shuō speak, say, talk; scold, upbraid