Fast
Fast adjective - Moving, proceeding, or acting with great speed.
Hypersonic and fast are semantically related. in speedy topic. In some cases you can use "Hypersonic" instead an adjective "Fast".
Hypersonic
Fast and hypersonic are semantically related. Sometimes you can use "Fast" instead an adjective "Hypersonic".
Mutual synonyms
Both words in one sentence
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More specifically: Thunderbird 1, piloted by Scott, is a hypersonic aircraft powered by a nuclear thermal engine, designed for getting to the crisis scene as fast as possible to gather intel.
Source: Series / Thunderbirds - Thunderbird 2, piloted by Virgil, is a giant less-hypersonic-but-still-fast lifting-body transport for moving the gear that Thunderbird 1 called for.
Source: Series / Thunderbirds
Cite this Source
Hypersonic and Fast. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/fast/hypersonic
Fast & Hypersonic. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/fast/hypersonic>.
Hypersonic or Fast. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/fast/hypersonic.
Google Ngram Viewer shows how "fast" and "hypersonic" have occurred on timeline