63 entries under difficulty topic. ×

10
snag(noun, block, delay, weakness)
7
barrier(noun, block, weakness, burden)
7
blockage(noun, block, weakness, burden)
6
catch(noun, weakness, hinder, burden)
6
hitch(noun, delay, weakness, burden)
6
obstacle(noun, block, weakness, burden)
5
strait(noun, predicament, crisis)
4
hurdle(noun, weakness, burden, hindrance)
4
stricture(noun, weakness, burden, defect)
3
deterrent(weakness, burden, hindrance, defect)
3
drawback(weakness, burden, hindrance, defect)
3
restriction(noun, weakness, burden, hindrance)
3
rub(weakness, burden, defect, impairment)
2
drag(weakness, hinder, burden, hindrance)
2
encumbrance(noun, weakness, burden, hindrance)
2
hazard(weakness, burden, defect, impairment)
2
holdup(noun, block, delay, weakness)
2
inhibition(noun, weakness, burden, hindrance)
2
pass(noun, predicament, crisis)
2
restraint(noun, weakness, burden, hindrance)
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APASmart Define. (2015). bottleneck thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/bottleneck/thesaurus/synonyms
ChicagoSmart Define. 2015. "bottleneck thesaurus" https://smartdefine.org/bottleneck/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, bottleneck thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/bottleneck/thesaurus/synonyms>.
MLASmart Define. "bottleneck thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/bottleneck/thesaurus/synonyms>