* Unbearable: So unpleasant that it is difficult to tolerate.
* Offensive: Insulting or causing anger or disgust.
* Unwelcome: Not wanted or desired.
* Repulsive: Causing strong feelings of dislike or aversion.
Here are some examples of how "obnoxious" is used:
* "The obnoxious smell from the factory made it impossible to enjoy the park."
* "He was so obnoxious at the party, constantly interrupting and making inappropriate jokes."
* "Her obnoxious behavior towards her coworkers made her unpopular."
* "That obnoxious noise from the construction site was driving me crazy."
Essentially, if something is obnoxious, it is something you'd rather avoid.