Nocuous
/ˈnɒk.ju.əs/noun
Causing harm or injury; harmful.
Did you know?Its Latin ancestor, *nocēre*, is the same root behind legal words like *innocent* and *nocent*, so English preserved a tiny ancient moral split between “harmless” and “harmful.”
Etymological Timeline
Proto-Indo-European
PIE
*nek-
“to injure, kill”
Latin
Latin
nocēre
“to harm, hurt, injure”
Latin
Latin
nocuōsus
“harmful, injurious”
Late Middle English
English
nocuous
“harmful, injurious”
Modern English
English
nocuous
“harmful; causing injury or damage”