untie
verb (used with object)
to loose or unfasten (anything tied); let or set loose by undoing a knot.
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.
All the morning they had been untying the flower boxes and making a list of the donors.
From Patty's Social Season by Carolyn Wells