What is another word for un-smoother?

Pronunciation: [ˈʌnsmˈuːðə] (IPA)

What are the antonyms for Un-smoother?

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SABAH AIR
Sabah Air is the name of a Malaysian aviation company that was founded in 1975. The name "Sabah Air" is unique, and its antonyms are not obvious. However, possible antonyms for the...