envenom

verb2

1. •
   To inject or put venom onto or into (someone or something).

   • As when Alcides from Oealia Crown’d With conquest, felt th’ envenom’d robe, and tore Through pain up by the roots Thessalian Pines […] — 1667
2. •
   To acerbate, make bitter.

   • Oh what a world is this, when what is comely Enuenoms him that beares it? — 1598