Antonyms of adj non-poisonous

2 senses of non-poisonous

Sense 1
nonpoisonous, non-poisonous -- (not producing poison)

INDIRECT (VIA nontoxic) -> toxic -- (of or relating to or caused by a toxin or poison; "suffering from exposure to toxic substances")

Sense 2
nonpoisonous, non-poisonous, nontoxic -- (safe to eat)

INDIRECT (VIA edible) -> inedible, uneatable -- (not suitable for food)
                                                                         

Similarity of adj non-poisonous

2 senses of non-poisonous

Sense 1
nonpoisonous, non-poisonous -- (not producing poison)
       => nontoxic (vs. toxic), atoxic -- (not producing or resulting from poison)

Sense 2
nonpoisonous, non-poisonous, nontoxic -- (safe to eat)
       => edible (vs. inedible), comestible, eatable -- (suitable for use as food)