Synonyms|102Antonyms|21|Broader|0Narrower|1Related|45
7
unfathomed
6
profound
6
unfathomable(adjective, deep, size, profound, bottomless)
5
immeasurable(adjective, size)
4
heavy
4
unsounded
3
sound
3
unexplored(adjective, explored)
2
bottomless
2
complete
2
enigmatic(adjective, deep, profound, bottomless)
2
fundamental
2
incomprehensible(adjective, deep, profound, bottomless)
2
mysterious
2
silent
2
unheard-of
2
uninvestigated
2
unknowable(adjective, deep, profound, bottomless)
2
wakeless
1
able
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APASmart Define. (2015). unplumbed thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/unplumbed/thesaurus/synonyms
ChicagoSmart Define. 2015. "unplumbed thesaurus" https://smartdefine.org/unplumbed/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, unplumbed thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/unplumbed/thesaurus/synonyms>.
MLASmart Define. "unplumbed thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/unplumbed/thesaurus/synonyms>