Monitor
Monitor noun - An ironclad vessel built by Federal forces to do battle with the Merrimac.
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Synonyms for Monitor
Sentinel and monitor are semantically related. In some cases you can use "Sentinel" instead a noun "Monitor".
Sentinel
Sentinel noun - A person or group that watches over someone or something.
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Synonyms for Sentinel
Cite this Source
Sentinel and Monitor. (2016). Retrieved 2026, July 30, from https://thesaurus.plus/related/monitor/sentinel
Monitor & Sentinel. N.p., 2016. Web. 30 Jul. 2026. <https://thesaurus.plus/related/monitor/sentinel>.
Sentinel or Monitor. 2016. Accessed July 30, 2026. https://thesaurus.plus/related/monitor/sentinel.
Google Ngram Viewer shows how "monitor" and "sentinel" have occurred on timeline