toughen
verb (used with or without object)
has been toughening
-
present perfect progressiveof toughen (3rd person singular).present perfect progressive
Used to describe an action that began in the past, has continued continuously, and is still in progress.
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.
The international community has been toughening sanctions on the Islamic Republic — including on its main cash cow, oil — because of fears that it plans to build nuclear weapons.
From Salon ● May 25, 2012
