Poisonous and having its effect; injurious to health (adjective)
USA Today Rootonym clue · 5 letters · last seen July 5, 2026
Answer
TOXIC
The Root
TOXmeans “poison”
In a sentence: Scientists concur that carbon monoxide is a TOXIC gas with lethal consequences.
About this clue
The Rootonym clue “Poisonous and having its effect; injurious to health (adjective)” has the answer TOXIC (5 letters), built on the root TOX, which means “poison”. See the full July 5, 2026 Rootonym puzzle for the other three words, or browse all Rootonym answers.