envenom
verb
[ ɪnˈvɛnəm ]
• put poison on or into; make poisonous.
• "the blades were envenomed with a fatal poison for which there is no antidote"
Similar:
poison,
add poison to,
spike,
lace,
contaminate,
embitter,
make bitter,
sour,
make rancorous,
jaundice,
colour,
taint,
anger,
aggravate,
antagonize,
Origin:
Middle English (formerly also as invenom ): from Old French envenimer, from en- ‘in’ + venim ‘venom’.