What you say makes sense, but it makes me wonder if there's a related concept where huge amounts of money are sitting on the sidelines that could start moving at any time. That seems kind of like inflation.
You might say "threat of inflation" because we imagine (reasonably) that the effect of sidelined money moving could lead to a pattern of inflation (given all the complex ways that might incentivize people to choose to raise prices). Good economists (not sure what portion of economists qualify in this case) would be fine with that framing.