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

• Lexulous
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adj. Not gentlemanly; not adhering to the high moral standards expected of a gentleman; impolite, unchivalrous, or indecent.

Not befitting a gentleman; rude; uncivil; ill-bred.

Synonyms See uncivil.

In an ungentlemanly manner; not as a gentleman.

adj. not befitting a gentleman

"He was further described as ungentlemanly by a brace of spinsters who had been within earshot on the veranda the morning he had abused the Asquith roads, but their evidence was not looked upon as damning."

unrefined   

polite   

boorish   

uncivil    impolite    coarse   

unladylike    unrefined    stingy    uncandid    dishonorable    ungraceful    disrespectful    uncivil    unethical    indelicate