Countersign
Countersign noun - A word or phrase that must be spoken by a person in order to pass a guard.
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Synonyms for Countersign
Key and countersign are semantically related. In some cases you can use "Key" instead a noun "Countersign".
Nearby Words: countersigned, countersigning
Key
Key noun - An explanatory list of the symbols on a map or chart.
Countersign and key are semantically related. Sometimes you can use "Countersign" instead a noun "Key".
Cite this Source
Key and Countersign. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/countersign/key
Countersign & Key. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/countersign/key>.
Key or Countersign. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/countersign/key.
Google Ngram Viewer shows how "countersign" and "key" have occurred on timeline