NYT Connections Purple Group Hint

The purple group is the hardest one, so don’t kick yourself if this visual hint does not immediately take you to the promised land.
Here’s your verbal clue: It’s the “missing word” category of the day. Add the same word to each of these and, voila! Purple group conquered.
Crying uncle? This was kind of purplish in terms of difficulty, but we’ve seen worse. And we’ll probably get worse tomorrow!
Today’s purple group answer is ___ Control and its words are BIRTH, CRUISE, QUALITY, and REMOTE.
We’ll see if the Times takes it easier on us tomorrow—check back then and find out!