Synonyms for venomous

Adjective

1. deadly, venomous, virulent, toxic (vs. nontoxic)

usage: extremely poisonous or injurious; producing venom; "venomous snakes"; "a virulent insect bite"

2. acerb, acerbic, acid, acrid, bitter, blistering, caustic, sulfurous, sulphurous, venomous, virulent, vitriolic, unpleasant (vs. pleasant)

usage: harsh or corrosive in tone; "an acerbic tone piercing otherwise flowery prose"; "a barrage of acid comments"; "her acrid remarks make her many enemies"; "bitter words"; "blistering criticism"; "caustic jokes about political assassination, talk-show hosts and medical ethics"; "a sulfurous denunciation"

3. poisonous, venomous, vicious, malevolent (vs. benevolent), malicious

usage: marked by deep ill will; deliberately harmful; "a malevolent lie"; "poisonous hate...in his eyes"- Ernest Hemingway; "venomous criticism"; "vicious gossip"