Meaning of the Sanskrit Word: sapatnaih

  sapatnaiḥ—by our enemies    SB 3.18.4
  sapatnaiḥ—by our enemies, the demons    SB 6.9.26-27
  sapatnaiḥ—by the enemies    SB 7.2.6
  sapatnaiḥ—by enemies    SB 7.2.28
  sapatnaiḥ—by the competitors    SB 8.16.15
  sapatnaiḥ—by the rivals    SB 8.17.12

Can't find any compound Sanskrit words containing sapatnaih.