zephyrlesshttp://www.oed.com/dictionary/zephyrless_adj%3Ftab%3Dmeaning_and_usezephyrless, adj.
Revised 2018

zephyrlessadjective

  1. a1821–
    † a. (In quot. a1821, of wind) characterized by the absence of mild or gentle currents; (hence) strong, violent (obsolete); b. breezeless; calm, still.
    Stressed as ˈzephyrless.
    1. a1821
      Whose winds, all zephyrless, hold scourging rods.
      J. Keats, To Fanny in R. M. Milnes, Life, Letters & Literary Remains Keats (1848) vol. II. 35
    2. 1905
      As mild as a zephyrless summer morn.
      Proceedings 36th Ann. Meeting Southeastern Iowa Horticultural Society 276
    3. 2000
      The zephyrless clear blue sky.
      Herald (Glasgow) (Nexis) 17 January 5

Originally published as part of the entry for zephyr, n.

zephyr, n. was revised in June 2018.