The device ____. (moves earlier and forth, or operates on a ago and forth style of motion)
I waved mine hand ____ly. (in a ago and soon manner)
Oscillates fits the device example, yet not (very well) the hand example.
You are watching: Word for going back and forth
Possibilities because that the hand activity are wildly or repeatedly. The latter could additionally fit the device case.
I think a typical term because that this kind of activity in machine is reciprocating.
alternating back-and-forth movement
Google images for reciprocating.
an up-and-down or a back-and-forth activity or procedure.
moving up and down, ago and forth, or alternately ahead and behind: It to be a seesaw video game with the lead an altering hands countless times.
You deserve to use Sway , it might only apply for your an initial sentence.As Google"s definition:
move or cause to move progressively or rhythmically backward and also forward or from side to side.
Try "waver" because that your first sentence. Waver has a variety of meanings, all an ideal to your description and also requirements.
For the hand wave, shot "flutteringly"
There is the mythological PushmePullyu creature. You could work that right into a expression as a metaphor. It to be attempted, rather unsuccessfully, in a slightly various metaphorical manner, 1
The Pushme-Pullyu Is Alive and Well, however Dr. Doolittle Is in Trouble.
I think this is a better example though, 2
Regulation is currently a Pushmepullyou.
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Churned might work well for the maker example, particularly if pistons room involved. If the back-and-forthness is a violent, out of control thing, try buffeted.
For the hand example, you might think about using the feeling behind the gesture. Why are they waving their hand? Dismissively? space they waving goodbye come somebody, maybe sadly, if the human is leaving? and go front on finding bigger words because that the emotions, if you want. I"m simply tired, hope that aided though.
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