Toxic means a poisonous to a living organism.
Toxic is the Oxford Word of the Year 2018: The adjective toxic is defined as ‘poisonous’ and first appeared in English in the mid-seventeenth century from the medieval Latin toxicus, meaning ‘poisoned’ or ‘imbued with poison’. In 2018, toxic added many strings to its poisoned bow becoming an intoxicating descriptor for the year’s most talked about topics. It is the sheer scope of its application, as found by our research, that made toxic the stand-out choice for the Word of the Year title.
