noncarbonated
/ˌnɑnˈkɑrbəneɪtɪd/
adjective
- Not containing carbon dioxide gas; not fizzy or bubbly.
- She ordered a noncarbonated sparkling water that was still and flat.
- The restaurant offers both carbonated and noncarbonated beverages.
- I prefer noncarbonated drinks like water or juice instead of soda.
Antonyms