打(う)ちのめすto knock down, to beat (someone) up, , to injure (someone) so badly they cannot recover (esp. emotionally), to overwhelm (with mental anguish, etc.)

Kata kerja-う (す), Kata kerja transitif

1. 1.

   EN to knock (someone) down, to floor, to beat up

2. 2.

   EN to deal a devastating blow (from which one cannot recover), to devastate (emotionally), to crush, to overwhelm, to defeat resoundingly, to give (an opponent) a drubbing