"humbling" in the verb sense
1. humble
cause to be unpretentious
"This experience will humble him"
2. humiliate, mortify, chagrin, humble, abase
cause to feel shame hurt the pride of
"He humiliated his colleague by criticising him in front of the boss"
"humbling" in the adjective sense
1. demeaning, humbling, humiliating, mortifying
causing awareness of your shortcomings
"golf is a humbling game"
Source: WordNet® (An amazing lexical database of English)
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