knock-back

/N AA1 K B AE1 K/
noun
  1. 1

    A blow that causes the recipient to fall or move backwards, a knock back; a recoil.

  2. 2

    Something that impedes or reverses progress; a setback.

  3. 3

    A rejection; a refusal.

    โ€œHe got a few knockbacks today when he tried to give his resume out at the local shops.โ€

Source: https://en.wiktionary.org/wiki/knock-back, https://en.wiktionary.org/wiki/knockback