70 entries under fail topic. ×

2
chagrin(verb, upset, bother, disturb)
2
circumvent(verb, upset, deceive, thwart)
2
cross(attack, abandon, deceive, wound)
2
dash(verb, upset, deceive, thwart)
2
disconcert(verb, upset, bother, disturb)
2
disenchant(verb, upset, deceive, thwart)
2
disgruntle(verb, upset, cause, happy)
2
double-cross(verb, attack, abandon, cross)
2
dumbfound(verb, upset, bother, disturb)
2
foil(verb, upset, deceive, thwart)
2
founder(verb, upset, drop, decline, drive)
2
mislead(verb, upset, abandon, cross)
2
put out(expression, upset, deceive, thwart)
2
take in(expression, abandon, deceive, betray)
1
abort(verb, upset, deceive, thwart)
1
break faith(expression, abandon, deceive, desert)
1
bring to naught(expression, idiom, upset, deceive)
1
bungle(verb, upset, deceive, thwart)
1
come to nothing(expression, idiom, upset, deceive)
1
dash hopes(expression, upset, deceive, thwart)
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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>