has been quickening
-
present perfect progressiveof quicken (3rd person singular).present perfect progressive
Used to describe an action that began in the past, has continued continuously, and is still in progress.
quickenverb (used with object)to make more rapid; accelerate; hasten.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.