RichThesaurus
rippleless
vs
unruffled
rippleless
adj
Without ripples.
unruffled
adj
Not ruffled or tousled.
Calm, not ruffled, serene, at peace, unbothered.
How often have the words
rippleless
and
unruffled
occurred in a corpus of books?
(source:
Google Ngram Viewer
)