- likely to cause damage or injury; harmful; noxious.
Origin of nocuous
1625–35; < Latin nocuus harmful, injurious, equivalent to noc(ēre) to harm + -uus deverbal adj. suffix; see -ous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Related Words for nocuousdangerous, deadly, harmful, injurious, malignant, poisonous, damaging, noxious
- rare harmful; noxious
Word Origin for nocuous
C17: from Latin nocuus, from nocēre to hurt
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for nocuous
1630s, "noxious, harmful," from Latin nocuus "harmful," from stem of nocere "to hurt, injure, harm" (see innocuous).
Online Etymology Dictionary, © 2010 Douglas Harper