Meaning: Very rude or annoying.

Examples: 

You have to be nice to customers all the time – even if they’re being obnoxious.

There was a really obnoxious guy on the train this morning who almost started a fight.

A lot of people become very obnoxious when they’re drunk.

Pop Quiz:

Which of the following describes obnoxious behavior?

A.  Quietly sitting and reading.

B.  Laughing loudly and cursing.

C.  Helping someone pick something up that’s fallen on the floor.

To see the correct answer, click on “Continue reading”:

The correct answer is B.  Being loud and saying bad words is an example of rude and/or annoying behavior.