thwarting russian

• обла́мывавший

  breaking off, snapping off

  frustrating, thwarting, spoiling, disappointing

• обла́мывающий

  frustrating, disappointing, spoiling, thwarting

• прова́ливающий

  causing to fail, ruining, thwarting

  failing (an exam/task), underperforming

• срыва́ющий

  tearing off, picking, plucking

  disrupting, thwarting, frustrating, spoiling