Meaning of the Sanskrit Word: nirgunasya

  nirgunasya—beyond the three modes of nature    Adi 4.206, Madhya 19.172
  nirgunasya—of the Absolute    SB 1.10.19
  nirgunasya—of the Transcendence    SB 2.5.18
  nirgunasya—who is without the modes of nature    SB 3.7.2
  nirgunasya—unadulterated    SB 3.29.11-12

Can't find any compound Sanskrit words containing nirgunasya.