Key
Key adjective - Coming before all others in importance.
Particular and key are semantically related. In some cases you can use "Particular" instead an adjective "Key".
Particular
Particular adjective - Hard to please.
Key and particular are semantically related. Sometimes you can use "Key" instead an adjective "Particular".
Mutual synonyms
How words are described
Both words in one sentence
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In speculative settings, the key to a particular mechanism may not resemble a normal key at all, or not even be a traditional key, but a particular word or phrase to be spoken or even a person.
Source: Cool Key - Sometimes the missing training becomes a kind of inversion of Chekhov's Skill, in which the fact that a particular skill is not available to a character comes back at a key moment in the plot.
Source: Incompletely Trained -
In Olga Chigirinskaya's novel Beyond the Dawn, a particular song performed by a particular minstrel was the key to undoing the protagonist's Memory Gambit.
Source: Musical Trigger
Cite this Source
Particular and Key. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/key/particular
Key & Particular. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/key/particular>.
Particular or Key. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/key/particular.
Google Ngram Viewer shows how "key" and "particular" have occurred on timeline