This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Not idiomatic.

"I think most young composers have suffered through this: nothing sucks more than watching musicians roll their eyes and mutter and declare bits 'unidiomatic' that, of course, they'd woodshed if the name in the upper-left corner was 'Shostakovich'."

idiomatic