Meaning of the Sanskrit Word: sadho

  sādho—O great, saintly person    SB 5.10.18, SB 7.10.18, SB 8.16.17
  sādho—O sage    SB 1.1.11
  sādho—O honest one    SB 3.4.12
  sādho—O good one    SB 3.5.18
  sādho—O Vidura    SB 3.19.9
  sādho—the great saint    SB 9.16.15

Can't find any compound Sanskrit words containing sadho.