Keep
Keep noun - The act or activity of keeping something in an existing and usually satisfactory condition.
Usage example: the keep of the stable is mainly left to the two equine-loving daughters
Upkeep is a synonym for keep in money topic. In some cases you can use "Upkeep" instead a noun "Keep", when it comes to topics like maintenance, board.
Upkeep
Upkeep noun - The act or activity of keeping something in an existing and usually satisfactory condition.
Usage example: the upkeep of the old place was costing a fortune
Keep is a synonym for upkeep in money topic. You can use "Keep" instead a noun "Upkeep", if it concerns topics such as maintenance, subsistence.
Mutual synonyms
How words are described
Both words in one sentence
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Fred Flintstone moves into one to keep Pebbles away from the riff-raff in Bedrock, but they find they can't afford the upkeep.
Source: Big Fancy House -
That governor has three duties: Pay your tithes to the upkeep of the Imperium, turn over any psykers to the black ships, and keep your world from rebelling.
Source: Feudal Future - It is then shown that, in order to keep the theme park running, he has pay for its upkeep, and he must do so by selling tickets and thus sharing the park with thousands of other people every day.
Cite this Source
Upkeep and Keep. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/keep/upkeep
Keep & Upkeep. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/keep/upkeep>.
Upkeep or Keep. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/keep/upkeep.
Google Ngram Viewer shows how "keep" and "upkeep" have occurred on timeline