crestfallen (adj.)

• abashed
• ashamed
• baffled
• blasted
• blighted
• blushing
• brooding
• broody
• chagrined
• chapfallen
• crossed
• crushed
• dashed
• defeated
• disappointed
• dished
• disillusioned
• dissatisfied
• embarrassed
• foiled
• frustrated
• glum
• hangdog
• humbled
• humiliated
• long-faced
• moody
• morose
• mortified
• red-faced
• regretful
• shamed
• shamefaced
• soured
• sulky
• sullen
• thwarted