non-poisonous

The word is a modern English compound formed by directly applying the productive negative prefix "non-" to the established adjective "poisonous." The prefix "non-" originates from Latin non, meaning "not," a strengthened form of the Proto-Indo-European negative particle ne. The base word "poisonous" derives from Old French puison (a drink, especially a medicinal one, later a poisonous drink), which itself came from Latin pōtiōnem (a drink, potion). The semantic shift from "drink" to specifically "deadly drink" and then to any toxic substance occurred in medieval Latin and French. Therefore, "non-poisonous" logically constructs its meaning by negating the property of containing or being a toxic substance, creating a clear, descriptive term primarily used in biological and safety contexts.

Structure: non (not) + poisonous (containing poison) - non: A prefix of Latin origin, meaning "not" or "the opposite of." It functions as a negative modifier. - poisonous: An adjective of Latin and Old French origin, meaning "containing or having the qualities of poison." It functions as the base word being negated.