Be watchful
Keep and be watchful are semantically related. in guard topic. In some cases you can use "Keep" instead a verb phrase "Be watchful".
Keep
Keep verb - To mark with an appropriate practice, rite, or ceremony.
Mutual synonyms
Cite this Source
Keep and Be watchful. (2016). Retrieved 2026, July 29, from https://thesaurus.plus/related/be_watchful/keep
Be watchful & Keep. N.p., 2016. Web. 29 Jul. 2026. <https://thesaurus.plus/related/be_watchful/keep>.
Keep or Be watchful. 2016. Accessed July 29, 2026. https://thesaurus.plus/related/be_watchful/keep.
Google Ngram Viewer shows how "be watchful" and "keep" have occurred on timeline