134 entries under noun topic. ×

6
cut(depression, hollow, ditch, scrape)
6
dike(depression, drain, ditch, channel)
6
excavation(drain, dip, ditch, bottom)
6
valley(dip, hollow, bottom, gorge)
6
conduit(line, course, drain, means)
6
tub
5
basin(gorge, vale)
5
crib(depression, rack, gutter, manger)
5
gully(depression, ditch, channel, pit)
5
mine(channel, pit, trench, quarry)
4
aqueduct(course, means, race, flow)
4
dent(depression, hollow, scrape, indentation)
4
duct(line, depression, course, drain)
4
flute
4
fosse
4
ravine(groove, furrow)
4
slump(decline, failure, depression, recession)
4
dale(dip, bottom, gorge, valley)
4
gouge
4
quarry(mine, pit)
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APASmart Define. (2015). trough thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/trough/thesaurus/synonyms
ChicagoSmart Define. 2015. "trough thesaurus" https://smartdefine.org/trough/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, trough thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/trough/thesaurus/synonyms>.
MLASmart Define. "trough thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/trough/thesaurus/synonyms>