Deep
Deep adjective - Being beyond one's powers to know, understand, or explain.
Usage example: a deep, dark secret that he took to his grave
Esoteric is a synonym for deep in abstract topic. In some cases you can use "Esoteric" instead an adjective "Deep", when it comes to topics like profound, obscure, unclear, easy. popular alternative
Esoteric
Esoteric adjective - Difficult for one of ordinary knowledge or intelligence to understand.
Usage example: metaphysics is such an esoteric subject that most people are content to leave it to the philosophers
Mutual synonyms
Both words in one sentence
- Sometimes characters are so complex, so deep and nuanced, that an entire episode is devoted to some esoteric part of their back story.
Source: AM/FM Characterization -
Such a memento can represent romantic partners, deep friendships, familial relationships or even esoteric connections.
Source: Memento MacGuffin - The students are befuddled and in some cases driven to tears by the insanely complicated questions that delve deep into areas of esoteric knowledge.
Source: Secret Test of Character
Cite this Source
Esoteric and Deep. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/deep/esoteric
Deep & Esoteric. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/deep/esoteric>.
Esoteric or Deep. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/deep/esoteric.
Google Ngram Viewer shows how "deep" and "esoteric" have occurred on timeline