It is noxa, Latin for a hurt.
The root word of "obnoxious" is "nox," which comes from Latin meaning "night."
noxious
The Latin root word "noxa" means harmful or dangerous. It is often used in English words related to injury or harm, such as noxious or obnoxious.
The loud and obnoxious music from the party next door kept me awake all night.
The root word of "unusual" is "usual."
The root word is gift.
The root word of "endless" is "end."
Noxious and obnoxious all come from noxa.
Obnoxious is an adjective--an obnoxiousperson.
Some words that can be made from the word 'obnoxious' are:binbisonbooboonbunboxbusibisinionisnibnonobnoxiousonoxsinsinusSiouxsixsnobsosobsonsoonsousoxsubsun
http://thesaurus.reference.com/browse/obnoxious
I know it's not exactly the same but: nocturnal. obnoxious.
He's so Obnoxious and rude to that girl.
annoying
A sod.
The word is spelled obnoxious.
The loud and obnoxious music from the party next door kept me awake all night.
obnoxious?
Obnoxious.