THESAURUS
letdown
abasement, abatement, allayment, alleviation, arrest, assuagement, bafflement, balk, betrayed hope, blasted expectation, blighted hope, blow, blunting, buffet, calming, check, comedown, cruel disappointment, damping, dash, dashed hope, deadening, debasement, deceleration, defeat, deflation, delay, demulsion, descent, detention, diminution, disappointment, discomfiture, disgrace, disillusionment, dissatisfaction, drag, dulcification, dulling, dump, ease-off, ease-up, easing, embarrassment, failure, fallen countenance, falling-off, fiasco, fizzle, flagging, foiling, forlorn hope, frustration, hangdog look, holdup, hope deferred, humbled pride, humiliation, hushing, lag, leniency, lessening, letup, lightening, loosening, lulling, minus acceleration, mirage, mitigation, modulation, mollification, mortification, obstruction, pacification, palliation, put-down, quietening, quieting, reduction, relaxation, remission, retardation, retardment, self-abasement, self-abnegation, self-diminishment, setback, setdown, shame, shamefacedness, shamefastness, slack-up, slackening, slowdown, slowing, slowing down, slowup, softening, soothing, sore disappointment, subduement, tantalization, tease, tempering, tranquilization
