Essential
Unique
Unique adjective - Of, relating to, or belonging to a single person.
Essential and unique are semantically related. Sometimes you can use "Essential" instead an adjective "Unique".
Nearby Words: uniquely, uniqueness
Mutual synonyms
Both words in one sentence
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Those noises that went with their unique slapstick were an essential part of their comedy.
Source: Film / The Three Stooges -
In Divine Divinity, each key is unique, all locked doors require a specific one, making lock-picking one of the most essential skills.
Source: Interchangeable Antimatter Keys - Greater Vampires have more detailed and unique designs than other enemies, do far more damage, and have far more health, but you'll find them lying around regular rooms, so you might not realise how tough they really are and how essential it is to Stake them while they're in the coffin.
Source: Boss in Mook Clothing
Cite this Source
Unique and Essential. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/essential/unique
Essential & Unique. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/essential/unique>.
Unique or Essential. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/essential/unique.
Google Ngram Viewer shows how "essential" and "unique" have occurred on timeline