synonym poisonous
Wiktionary(0.00 / 0 votes)Rate these synonyms: 1  poisonous(adjective) Synonyms: venomous, attery, toxic. 2  poisonous(adjective) Containing sufficient poison to be dangerous. Synonyms: 3  poisonous(adjective) Inedible due to containing poison; poisonous to eat. Synonyms: