English
flutterless
From flutter + -less.
Formed from flutter + -less
Proto-Indo-European *plewd- ‘to float, swim, fly’
…
Proto-Germanic *flutōną ‘to float’
Proto-Germanic *flutrōną
Old English floterian ‘to float about, flutter’
Middle English floteren ‘to be held up or be supported by water’
English flutter
Today it means
adj Without fluttering.
Language periods are conventional ranges, not dates for this word.
Etymograph / flutterless