Another word for disappointment
The state of being disappointed
dissatisfaction, nonfulfillment, unfulfillment, frustration, chagrin, thwarted expectations, miscarriage of plans, defeat, failure, lack of success, despondency, displeasure, distress, hope deferred, discouragement, let down, disillusionment, foiling, nonsuccess, mortification, vain expectation, bafflement, disillusion, setback, discontent, blighted hope, dashed hope, balking; see also defeat 3, regret 1.
A person or thing that disappoints
letdown, miscarriage, misfortune, mischance, calamity, blunder, inefficacy, setback, downfall, slip, defeat, impasse, mishap, error, mistake, discouragement, frustration, obstacle, check, balk, abortion, bungle, slip 'twixt the cup and the lip, faux pas, cold comfort, labor in vain, miscalculation, miss, failure, shipwreck, fiasco, no go*, blind alley*, fizzle*, washout*, lemon*, dud*, flash in the pan*, bust*, frost*, false alarm*, non-starter*; see also failure 1, 2.