13
fail(verb, upset, abandon, neglect, deceive)
11
disappoint(verb, adjective, upset, cause, fail)
11
lower(verb, adjective, drop, decline, drive)
10
take down(verb, expression, phrasal verb, drop, reduce)
8
depress(verb, adjective, drop, decline, drive)
7
betray(verb, attack, fail, abandon, neglect)
7
deceive(verb, upset, attack, fail, abandon)
7
dissatisfy(verb, upset, cause, fail, happy)
6
bring down(verb, expression, drop, decline, drive)
6
disillusion(verb, upset, fail, deceive, thwart)
5
pull down(verb, expression, phrasal verb, drop, press)
5
rest(verb, stop, delay, relax, pause)
4
desert(verb, fail, abandon, neglect, deceive)
4
disappointed(adjective, upset, melancholy, dissatisfied, unglued)
4
drop(verb, stop, decline, drive, reduce)
4
embarrass(verb, cause, defeat, reveal, informal)
4
frustrate(verb, upset, fail, deceive, thwart)
4
humble(demolish, dismantle)
4
humiliate(verb, shame, demolish, humble, disconcert)
4
mortify(verb, upset, bother, disturb, defeat)
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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>