Taxonomy of meanings for 足以:  

  • SUFFICIENT
    • VPt+V[0]be sufficient to VCH
    • VPtoV(0)be sufficient for the contextually determinate subject to VTWH
  • ABLE
    • VPt+V[0]{PASS}be worth V-ing
    • VPt+V[0]be capable of V-ing (NOT: be sufficient to V with); be in a position to