| trench(well, hole, hollow) | |
| valley(dish, sink, dip, pot, bowl) | |
| wadi | |
| water(noun, wet, surface) | |
| gut | |
| yawn | |
| abysses | |
| alienation(noun, break, split, division, gap) | |
| anchorage(noun, sound, arm, mouth, harbor) | |
| back stream | |
| backflow | |
| backwash | |
| backwater | |
| blank(noun, space, void, gap, rift) | |
| boca | |
| bottomless pit(noun, expression, situation, hell) | |
| bowl(dish, sink, dip, pot, bottom) | |
| box canyon | |
| broaching | |
| canyon |
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| APA | Smart Define. (2015). gulf thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/gulf/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "gulf thesaurus" https://smartdefine.org/gulf/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, gulf thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/gulf/thesaurus/synonyms>. |
| MLA | Smart Define. "gulf thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/gulf/thesaurus/synonyms> |