87 entries under adjective topic. ×

11
disappoint(verb, upset, cause, fail)
11
lower(verb, drop, decline, drive)
8
depress(verb, drop, decline, drive)
4
disappointed(upset, melancholy, dissatisfied, unglued)
3
crestfallen(upset, blue, low, sad)
3
disillusioned(upset, depressed, distressed, discontented)
3
dissatisfied(upset, depressed, distressed, discontented)
3
frustrated(upset, distressed, discontented, dissatisfied)
3
thwarted(upset, distressed, discontented, dissatisfied)
2
baffle(verb, upset, fail, deceive)
2
balk(verb, upset, fail, deceive)
2
bleeding(blue, low, sad, unhappy)
2
bummed out(expression, blue, low, sad)
2
destroyed(blue, low, sad, unhappy)
2
down(upset, blue, low, sad)
2
down and out(expression, idiom, blue, low)
2
downcast(upset, blue, low, sad)
2
dragged(blue, low, sad, unhappy)
2
grim(blue, low, sad, unhappy)
2
hurting(blue, low, sad, unhappy)
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APASmart Define. (2015). let down thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/let_down/thesaurus/synonyms
ChicagoSmart Define. 2015. "let down thesaurus" https://smartdefine.org/let_down/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, let down thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/let_down/thesaurus/synonyms>.
MLASmart Define. "let down thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/let_down/thesaurus/synonyms>