Key
Valid
Mutual synonyms
Both words in one sentence
- Note that it is their mental state and decision that is key to this trope — 'someone who kills people' is not valid unless we see them choose to kill or explain their reasoning.
Source: Gaining the Will to Kill -
Both are valid, and both will render the key gone.
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A minor but still valid example in Harry Potter and the Order of the Phoenix is Snape bottling key memories in the pensieve to keep Harry from seeing them during Occlumency lessons, though this backfires.
Source: Memory Gambit
Cite this Source
Valid and Key. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/key/valid
Key & Valid. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/key/valid>.
Valid or Key. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/key/valid.
Google Ngram Viewer shows how "key" and "valid" have occurred on timeline