disappointment

[1]	frustration , letdown , non-fulfilment , unfulfilment , unsatisfaction , dissatisfaction , set-back , failure , let-down , defeat , blow , fiasco , calamity , disaster , fizzle , (Brit) damp squib , (Colloq) wash-out
[2]	dejection , dashing hopes , depression , discouragement , disenchantment , distress , regret , mortification , chagrin