Meaning of the Sanskrit Word: upaste

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

Can't find any compound Sanskrit words containing upaste.