flutterless

Without fluttering.

Adjective

  1. Without fluttering.
    • […] While over its bosom the dim vapours hover, / And flutterless skims the snowy-winged plover: […] - 1819, John Neal, The Battle of Niagara: With Other Poems, page 223:
  2. Without the form of sound distortion called flutter.
    • The Synchro-Sound 16-mm. professional camera is described which features a sprocketless sound drive designed to insure flutterless recording. - 1939, Eastman Kodak Company. Research Laboratories, Monthly Abstract...

Origin

From flutter + -less.