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after-run

[ af-ter-ruhn, ahf- ]
/ ˈæf tərˌrʌn, ˈɑf- /
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noun
the continued running of an internal-combustion engine after the ignition is switched off: Heavy carbon buildup can cause annoying engine after-run.
QUIZ
SHALL WE PLAY A "SHALL" VS. "SHOULD" CHALLENGE?
Should you take this quiz on “shall” versus “should”? It should prove to be a quick challenge!
Question 1 of 6
Which form is used to state an obligation or duty someone has?
Also called dieseling, run-on.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

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