burn up Meaning, Definition & Usage

1. verb burn brightly
   blaze up; flare; flame up.
   
   • Every star seemed to flare with new intensity
2. verb use up (energy)
   burn off; burn.
   
   • burn off calories through vigorous exercise
3. verb burn completely; be consumed or destroyed by fire
   burn down; go up.
   
   • The hut burned down
   • The mountain of paper went up in flames

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