RichThesaurus
uncarbonated
vs
unruffled
uncarbonated
adj
Not carbonated.
unruffled
adj
Not ruffled or tousled.
Calm, not ruffled, serene, at peace, unbothered.
How often have the words
uncarbonated
and
unruffled
occurred in a corpus of books?
(source:
Google Ngram Viewer
)