Deep
Deep adjective - Extending far downward.
Underlying and deep are semantically related. In some cases you can use "Underlying" instead an adjective "Deep".
Underlying
Underlying adjective - Of or relating to the simplest facts or theories of a subject.
Deep and underlying are semantically related. Sometimes you can use "Deep" instead an adjective "Underlying".
Both words in one sentence
- Underlying it all, of course, are deep, unrealized issues surrounding his dead wife.
Source: Hollywood Psych -
Be Careful What You Wish For: The underlying problem with the Ruin-A-Life Drawing is that the winner's deep desire to get revenge will always involve biting them in the butt.
Source: Podcast / Kakos Industries -
The Doctor and Clara, less out of shyness or uncertainty about their feelings, but out of a wish to act mature and avoid unreasonable expectations in favor of preserving their deep, underlying friendship.
Cite this Source
Underlying and Deep. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/deep/underlying
Deep & Underlying. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/deep/underlying>.
Underlying or Deep. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/deep/underlying.
Google Ngram Viewer shows how "deep" and "underlying" have occurred on timeline