Directly
Flat out
Flat out adverb - At top speed.
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Synonyms for Flat out
Directly and flat out are semantically related in at top speed topic. Sometimes you can use "Directly" instead an adverb phrase "Flat out".
Mutual synonyms
Related pairs
Both terms in one sentence
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Really only brought forth in the two episodes where they're directly confronted with Earth food, and none of the cast members catch on to it (even when An flat out says that she doesn't eat food, though she catches herself).
Source: I Do Not Drink Wine
Cite this Source
Flat out and Directly. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/directly/flat_out
Directly & Flat out. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/directly/flat_out>.
Flat out or Directly. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/directly/flat_out.
Google Ngram Viewer shows how "directly" and "flat out" have occurred on timeline