overburn

/ˌoʊvərˈbɜːrn/
verb
  1. To burn too much or for too long, causing damage or waste.
    • The factory was fined for allowing its furnaces to overburn fuel.
    • If you overburn the toast, it will taste bitter.
    • Be careful not to overburn the wood in the fireplace.
Synonyms
noun
  1. The act or result of burning too much, especially in a fire or industrial process.
    • The kiln's overburn ruined the pottery batch.
    • Firefighters worked to prevent an overburn that could spread to the forest.
    • The overburn of the candle left a pool of wax on the table.