smrtelně jedovatý

I need to retain the knowledge that some spiders are deadly poisonous even when my fear of them has been eliminated. (COCA)
The landlady didn't like the trumpet vine because it was deadly poisonous. (COCA)
Where the pure white hues of the deadly poisonous destroying angel (Amanita virosa) and its richly colored relative the fly amanita. (COCA)