85 entries under difficulty topic. ×

1
gridlock(noun, obstacle, obstruction, impediment)
1
hang-up(noun, obstacle, obstruction, impediment)
1
hitch(noun, disorder, weakness, burden)
1
impedance(noun, obstacle, obstruction, impediment)
1
interference(noun, obstacle, obstruction, impediment)
1
interruption(noun, obstacle, obstruction, impediment)
1
intervention(noun, obstacle, obstruction, impediment)
1
jam-up(noun, obstacle, obstruction, impediment)
1
joker(noun, obstacle, obstruction, impediment)
1
limitation(noun, burden, hindrance, disadvantage)
1
lock(noun, obstacle, obstruction, impediment)
1
monkey wrench(noun, expression, obstacle, obstruction)
1
obstacle(noun, disorder, weakness, burden)
1
obstruction(noun, trouble, disorder, concern, strain)
1
restraint(noun, disorder, weakness, obstacle)
1
restriction(noun, disorder, weakness, burden)
1
setback(noun, trouble, disorder, worry)
1
shackle(noun, weakness, burden, weight)
1
snag(noun, disorder, weakness, burden)
1
stoppage(noun, disorder, weakness, obstacle)
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APASmart Define. (2015). millstone thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/millstone/thesaurus/synonyms
ChicagoSmart Define. 2015. "millstone thesaurus" https://smartdefine.org/millstone/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, millstone thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/millstone/thesaurus/synonyms>.
MLASmart Define. "millstone thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/millstone/thesaurus/synonyms>