Fast
Fast adjective - Firm in one's allegiance to someone or something.
Usage example: the two girls soon became fast and inseparable friends
Loyal is a synonym for fast in characteristic topic. In some cases you can use "Loyal" instead an adjective "Fast", when it comes to topics like close, fixed, continue. popular alternative
Loyal
Loyal adjective - Firm in one's allegiance to someone or something.
Usage example: we remain loyal to the ideals for which this organization stands
Fast is a synonym for loyal in characteristic topic. You can use "Fast" instead an adjective "Loyal", if it concerns topics such as continue, constant. popular alternative
Mutual synonyms
Both words in one sentence
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One was the rainbow-maned Captain of the Wonderbolts, while the other was her loyal (and some said, loving) lightning-fast second-in-command.
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The Shakespeare references come fast and thick: Fools are supposed to stay loyal to their king unto death, no matter what madness may ensue in the meantime.
Source: Discworld / Wyrd Sisters -
They are Laurel, (generous like Rarity, but unlike her is homely and poor) Razor Wind, (fast and loyal like Rainbow Dash) Cherry Blossom, (kind and shy like Fluttershy) Hard Candy, (zany and silly like Pinkie Pie, also a Minty Expy) and Hardy Bloom.
Cite this Source
Loyal and Fast. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/fast/loyal
Fast & Loyal. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/fast/loyal>.
Loyal or Fast. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/fast/loyal.
Google Ngram Viewer shows how "fast" and "loyal" have occurred on timeline