flat out

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[edit] English

[edit] Adverb

flat out

  1. (idiomatic) At top speed.
    After 10 minutes of running flat out, he was out of breath.
  2. (idiomatic) bluntly, no holds barred
    She thought it was best to tell him she didn't love him flat out.
  3. (idiomatic) lazy, sleeping (Australian)
    flat out (like a lizard in the sun) - doing absolutely nothing