Flat out and Sure

Related terms

Flat out adverb - At top speed.

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Sure and flat out are semantically related. In some cases you can use "Sure" instead the phrase "Flat out" as an adjective or an adverb.

Sure adverb - Without any question.

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Flat out and sure are semantically related. Sometimes you can use "Flat out" instead the word "Sure" as an adjective or an adverb.

Nearby Word: surely

He often flat out steals cereal from an old lady with magic powers, going as far as to go back in time to make sure she doesn't get any cereal.

Source: Cereal Vice Reward
Or, to make absolutely sure, it could flat out slap an Invisible Wall in front of you.

Source: Edge Gravity
Dr. Wily of Mega Man has done this a total of 11 times to make sure the main character doesn't maim him, send him to jail, or flat out kill him.

Source: Wounded Gazelle Gambit

Cite this Source

Sure and Flat out. (2016). Retrieved 2026, July 29, from https://thesaurus.plus/related/flat_out/sure

Flat out & Sure. N.p., 2016. Web. 29 Jul. 2026. <https://thesaurus.plus/related/flat_out/sure>.

Sure or Flat out. 2016. Accessed July 29, 2026. https://thesaurus.plus/related/flat_out/sure.

Google Ngram Viewer shows how "flat out" and "sure" have occurred on timeline