75 entries under expression topic. ×

8
railroad tie(idiom, noun, american)
6
sleeping car(noun, idiom, vehicle, car)
4
sleeper goby(noun, idiom)
3
baggage car(idiom, vehicle)
3
parlor car(idiom, vehicle)
2
dining car(idiom, vehicle)
2
luggage van(idiom, vehicle)
2
mail car(idiom, vehicle)
2
mail van(idiom, vehicle)
2
railway sleeper
1
codeine cough syrup
1
dark horse(noun, idiom, possibility)
1
dome car(idiom, vehicle)
1
double agent(noun, plant, agent, operative)
1
espionage agent(noun, plant, agent, operative)
1
express car(idiom, vehicle)
1
foreign agent(noun, plant, agent, operative)
1
freight car(idiom, vehicle)
1
hundred-to-one shot(noun, unknown, doubtfulness, underdog)
1
inside agent(noun, plant, agent, operative)
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APASmart Define. (2015). sleeper thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/sleeper/thesaurus/synonyms
ChicagoSmart Define. 2015. "sleeper thesaurus" https://smartdefine.org/sleeper/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, sleeper thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/sleeper/thesaurus/synonyms>.
MLASmart Define. "sleeper thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/sleeper/thesaurus/synonyms>