Deepest
//ˈdiːpɪst// adj
adj ·Rare ·Advanced level
Definitions
Adjective
- 1 superlative form of deep: most deep. form-of, superlative
"Most of the Himalayan rivers have been relatively untouched by dams near their sources. Now the two great Asian powers, India and China, are rushing to harness them as they cut through some of the world's deepest valleys."
Synonyms
All synonymsExample
More examples"I would like to express to you my deepest gratitude for having been a guest at your party."
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.