Alert
Alert adjective - Paying close attention usually for the purpose of anticipating approaching danger or opportunity.
Protective and alert are semantically related. In some cases you can use "Protective" instead an adjective "Alert".
Protective
Protective adjective - Intended to resist or prevent attack or aggression.
Alert and protective are semantically related. Sometimes you can use "Alert" instead an adjective "Protective".
Both words in one sentence
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He's obsessively protective of her, to the point where the local wildlife will alert him if anyone who might have an interest in her so much as sets foot there, allowing him to find them and kill them.
Source: Overprotective Dad
Cite this Source
Protective and Alert. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/alert/protective
Alert & Protective. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/alert/protective>.
Protective or Alert. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/alert/protective.
Google Ngram Viewer shows how "alert" and "protective" have occurred on timeline