having the qualities or effects of a poison

not safe to eat

marked by deep ill will; deliberately harmful

poisonous perennial Old World vine having violet flowers and oval coral-red berries; widespread weed in North America

an agaric regarded as poisonous

a plant that when touched or ingested in sufficient quantity can be harmful or fatal to an organism

any substance that causes injury or illness or death of a living organism

in a very malevolent manner