1. (n.) The act of disappointing, or the state of being disappointed; defeat or failure of expectation or hope; miscarriage of design or plan; frustration.

2. (n.) That which disappoints.

Faustianism awakening ban blackball blackballing blighted hope blow calamity chagrin cold comfort complaint dashed hopes debunking defeat dejection depression dim view disagreement disapprobation disapproval disaster discontent discontentedness discontentment discouragement disenchantment disesteem disfavor disgruntlement disillusion disillusionment displeasure disrespect dissatisfaction dissatisfiedness dissent distaste distress divine discontent enlightenment envy exclusion failure fiasco fizzle frustration hope deferred ill humor indignation low estimation low opinion mortification objection opposition opposure ostracism peevishness petulance protest querulousness rebelliousness regret rejection resentment restiveness restlessness return to reality rude awakening sourness sulkiness thumbs-down undeception uneasiness unfulfillment unhappiness unpleasure unsatisfaction unspelling vexation of spirit