border
noun
the part or edge of a surface or area that forms its outer boundary.
Used to describe an action that began in the past, has continued continuously, and is still in progress.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
There is no question that the Nats’ fielding has been bordering on dreadful this season: They’ve committed 31 errors and are among the worst in the league in nearly all fielding categories.
From Washington Post ● May 15, 2013