Fortify
Keep
Keep verb - To mark with an appropriate practice, rite, or ceremony.
Mutual synonyms
Common collocations
Both words in one sentence
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Although when given the time to fortify the doors and hinges, Jamie was able to keep them out.
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She can also fortify deployed Combat Kitties to keep them from being destroyed while on the defensive.
Source: The Engineer -
You can fortify and decorate the place however you like, store stuff, sleep, craft and modify items, keep your companions there and customize your Power Armour.
Source: Cool Garage
Cite this Source
Keep and Fortify. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/fortify/keep
Fortify & Keep. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/fortify/keep>.
Keep or Fortify. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/fortify/keep.
Google Ngram Viewer shows how "fortify" and "keep" have occurred on timeline