59 entries under expression topic. ×

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identification mark
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indication of locality(idiom, warning)
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looking after(verb, phrasal verb, protect, assure)
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mark up(verb, phrasal verb)
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navigation mark
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observation post
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observation tower
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palace guard
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rear guard(idiom, warning)
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save from harm(verb, idiom, keep, defend)
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signal post(idiom, warning)
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talent scout
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trade mark
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trade name
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undercover agent(idiom, warning)
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visual aid
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watch person watchtower(idiom, case, guard, post)
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watched over(verb, phrasal verb, keep, protect)
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watching over(verb, phrasal verb, keep, protect)
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APASmart Define. (2016). sentinel thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/sentinel/thesaurus/synonyms
ChicagoSmart Define. 2016. "sentinel thesaurus" https://smartdefine.org/sentinel/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, sentinel thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/sentinel/thesaurus/synonyms>.
MLASmart Define. "sentinel thesaurus" 20 March 2016. Web. 22 September 2026. <https://smartdefine.org/sentinel/thesaurus/synonyms>