David Foster Wallace, The Pale King, 2011, page 70 F.N.
“The latter is a good example of the sort of thing that threw the publisher’s legal people into a swivet of anality and caution.
swivet |ˈswivit|noun [in sing. ]a fluster or panic : the incomprehensible did not throw him into a swivet.ORIGIN late 19th cent.: of unknown origin.