1) Decelerate 2) Decline 3) Delay 4) Holdup 5) Retardation 1) Lag 2) Letup 3) Retard 4) Snag 
A slowdown (usually called a `go-slow` in British English) is an industrial action in which employees perform their duties but seek to reduce productivity or efficiency in their performance of these duties. A slowdown may be used as either a prelude or an alternative to a strike, as it is seen as less disruptive as well as less risky and costly .....[venue] Slowdown is an entertainment venue located at 729 North 14 Street in NoDo, a new development near the Near North Side neighborhood in Omaha, Nebraska. A combination of a live music venue, shops, restaurants and apartments, the venue was developed by Saddle Creek Records as a direct competitor to the Sokol Auditorium in Little Bohemi...
A deliberate reduction of work output without an actual strike in order to force concessions from employers. Under Title VII, Federal employees are specifically prohibited form engaging in a slowdown.
[n] - the act of slowing down or falling behind
lag noun the act of slowing down or falling behind