wag
verb (used with object)
to move from side to side, forward and backward, or up and down, especially rapidly and repeatedly.
Used to describe an action that will be fully completed or achieved by a specific point in the future.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Before another hour goes by, she will have wagged her tail for the last time,” said Master Trench, somewhat bitterly.
From The Crew of the Water Wagtail by R. M. (Robert Michael) Ballantyne