Meaning of the Sanskrit Word: upaste

  upaste—offers obeisances to and worships    SB 5.18.7
  upaste—worships    SB 5.18.17
  upaste—worships.    SB 5.19.1
  upaste—is situated    SB 5.20.2
  upaste—remains    SB 5.23.1
  upaste—acts according to    SB 6.1.49

Can't find any compound Sanskrit words containing upaste.