zigzagginghttp://www.oed.com/dictionary/zigzagging_n%3Ftab%3Dmeaning_and_usezigzagging, n. & adj.
First published 1921; not fully revised

zigzaggingnoun & adjective

  1. 1827–
    Stressed as ˈzigzagging.
    1. 1827
      The zigzaging which it would be necessary to make in stage-coaches.
      R. Southey, Letter to Mrs. Hughes 31 December
    2. 1861
      We..climbed a steep zigzagging ascent up the ridge.
      E. T. Holland in Peaks, Passes, & Glaciers (Alpine Club) 2nd Series vol. I. 85
    3. 1871
      One of these little zigzagging blurs [sc. humming birds] came purring toward me.
      J. R. Lowell, My Study Windows 16
    4. 1872
      These zigzagging minds.
      O. W. Holmes, Poet at Breakfast-table viii. 259
    5. 1893
      The irritating task of zig~zagging through her volumes.
      Athenæum 15 July 90/1

Originally published as part of the entry for zigzag, v.

zigzag, v. was first published in 1921; not fully revised.