Direct opposites:
* Humble: This is the most direct opposite, meaning having a modest or low estimate of one's importance.
* Unassuming: This describes someone who is not trying to attract attention to themselves and is not boastful.
Other words that contrast with arrogance:
* Modest: Having or showing a moderate or humble estimate of one's own importance.
* Self-effacing: Tending to make oneself inconspicuous or unimportant.
* Down-to-earth: Practical and realistic, not pretentious.
* Respectful: Showing or feeling deference and esteem.
* Considerate: Careful not to cause inconvenience or hurt to others.
* Empathetic: Showing an ability to understand and share the feelings of another.
The best word to use depends on the specific situation and the nuance you want to convey.