Synonyms of letdown

1 Syllable
slump, balk, blow
2 Syllables
bleakness, sadness, dismals, bathos, washout, chagrins, slumping, chagrin, doldrums, setback, dismay
3 Syllables
cheerlessness, wistfulness, falling-off, downcastness, chagrinned, chagrining, frustration, gloominess, comedown, frustrations, dolefuls
4 Syllables
sorrowfulness, disgruntlement, nonfulfillment, unfulfillment, anticlimax, pensiveness, discontentment, disenchantment
5 Syllables
dispiritedness, disillusionment, anticlimaxes, discontentedness, miserableness
6 Syllables
disconsolateness