Synonyms and related words :
apologetic, ashamed, baffled, balked, betrayed, bilked, blasted, blighted, chapfallen, conscience-smitten, conscience-stricken, contrite, crestfallen, crossed, crushed, dashed, defeated, disappointed, dished, disillusioned, dissatisfied, foiled, frustrated, full of remorse, guilty, ill done-by, ill-served, let down, mournful, out of countenance, penitent, remorseful, repentant, repining, rueful, sad, self-accusing, self-condemning, self-convicting, self-debasing, self-flagellating, self-humiliating, self-punishing, self-reproaching, shamefaced, shamefast, shameful, sorely disappointed, sorrowful, sorry, soured, thwarted, unhappy about, wistful