- nontoxic, atoxic - not producing or resulting from poison
Antonyms: toxic, cyanogenetic, cyanogenic, deadly, venomous, virulent, hepatotoxic, nephrotoxic, ototoxic, poisonous, toxicant, cytotoxic
- nonpoisonous, nontoxic - safe to eat
Antonyms: inedible, uneatable (indirect, via edible)