When someone says "I am humbled," generally he means that he has been made to feel more modest , or perhaps undeserving. Someone who has just been given a compliment might make a polite show of modesty by saying, "I am humbled by your generosity," meaning he feels he really doesn't live up to the compliment.

What does it mean to say I am humbled?

DEFINITIONS1. to feel less important or proud because of something that has been achieved or suffered by someone else. We feel humbled by our local community's generosity and support.

What does it mean for someone to be humbled?

not proud or arrogant; modest: to be humble although successful. having a feeling of insignificance, inferiority, subservience, etc.: In the presence of so many world-famous writers I felt very humble. low in rank, importance, status, quality, etc.; lowly: of humble origin;a humble home.