front
noun
the foremost part or surface of anything.
Used to describe an action that was ongoing continuously in the past up until another past event interrupted it.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
He had been fronting for the under pup so long that his own chances had dwindled down to a distant point in his gray-headed years.
From Trail's End by George W. (George Washington) Ogden