Meaning of the Sanskrit Word: upatasthe

  upatasthe—fell down    SB 4.1.24
  upatasthe—worshiped    SB 10.1.20
  upatasthe—approached.    SB 5.2.20
  upatasthe—approached    SB 9.14.17, SB 9.14.18, SB 9.14.17-18
  upatasthe—worshiped.    SB 5.1.9

Can't find any compound Sanskrit words containing upatasthe.