slack
adjective
not tight, taut, firm, or tense;
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.
Sales had been slacking off, as Wrigley focused its energy on newer, trendier products.
From Washington Post ● Jul. 14, 2015