noxious
Cross references:
1. pernicious
nox.ious \'na:k-sh*s\ aj [L noxius, fr. noxa harm; akin to L noce-re to
harm, ne]c-, nex violent death, Gk nekros dead body 1: HARMFUL, DESTRUCTIVE
2: morally corrupting : PERNICIOUS {a ~ doctrine} 3: DISTASTEFUL,
OBNOXIOUS - nox.ious.ly av
Webster's English Dictionary