–adjective
1. highly objectionable or offensive; odious: obnoxious behavior.
2. annoying or objectionable due to being a showoff or attracting undue attention to oneself: an obnoxious little brat.
3. Archaic. exposed or liable to harm, evil, or anything objectionable.
4. Obsolete. liable to punishment or censure; reprehensible.
(N.) Someone or thing who/which is perfect, without coming across as arrogant or being otherwise objectionable in nature.
Example: (Adj.) When Jane passed John the nice, smokable, two-paper joint she had rolled for her friends, John exclaimed: "Damn, Jane, this thing is obnoxious!"
(N.) Looks, does great in school, and he's a really great guy -- dude's obnoxious!
Example: 1. Kid: Can I have a t-shirt, it's only 14 dollars?
Parent: Yes of course, Johnny.
-one week later-
Kid: Can I order my shirt now?
Parent: We don't have enough money Johnny. -goes out to eat 10 times in a row-
Kid: That is OBNOXIOUS