Diet
Diet noun - The act of restricting your food intake (or your intake of particular foods).
Fast is a synonym for diet in slim topic. In some cases you can use "Fast" instead the word "Diet" as a noun or a verb, when it comes to topics like intake of food, limiting intake of food, abstain from food, abstinence from food.
Mutual synonyms
How words are described
Both words in one sentence
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Among other things he manages to keep a diet going for perhaps three days before lapsing into his previous unhealthy fast-food diet.
Source: Fat Slob -
Back when it was common practice for women to have 10 or more kids while living on a fairly poor diet, they aged pretty fast too.
Source: Younger Than They Look -
Charles Atlas Superpower: Ciri gets a diet of mushrooms and special leaves by the Witchers which don't give her super-strength but make her insanely strong and fast for a teenager.
Source: Literature / Blood of Elves
Cite this Source
Fast and Diet. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/diet/fast
Diet & Fast. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/diet/fast>.
Fast or Diet. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/diet/fast.
Google Ngram Viewer shows how "diet" and "fast" have occurred on timeline