Taxonomy of meanings for 不知:  

  • IGNORANT
    • VPt(0)oS[I] had no idea that S
    • VPt[0]oNone does not know N
    • VPt[0]oNab{S}I have no idea whether S
    • VPt0oS(one) does not know the answer to S; it is unknown whether S
    • NPabactignorant behaviour
    • VPtoN{PRED}be unaware that somebody is NDS
    • NPabspecificlack of knowledge of a particular pointCH
    • VPtoNhave no idea ofCH
    • VPtoSI do not know whether SDS
  • STUPID
    • NP[adN]the stupid
    • VPibe stupid