낙담이 · 낙담을
discouragement, disheartenment
Example
면접에 떨어졌지만 너무 낙담하지 않았어요.
I failed the interview, but I didn't get too discouraged.
Word parts
낙 fall+담 gallbladder, courage
Literally 'your gallbladder drops'; the gallbladder was thought to be the seat of courage.