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

• Lexulous
• Wordscraper
• Wordosaur

adj. Having manners of a specific kind: ill-mannered children.

adj. Having or showing a certain manner: a mild-mannered supervisor.

adj. Artificial or affected: mannered speech.

adj. Of, relating to, or exhibiting mannerisms.

adj. Having manners or (often excessive) mannerisms.

adj. Having a certain way, esp. a polite way, of carrying and conducting one's self.

adj. Affected with mannerism; marked by excess of some characteristic peculiarity.

Having or possessed of manners, carriage, or demeanor; in compounds, having manners of a certain kind, as in ill-mannered, well-mannered.

Marked by a constantly repeated manner or method, especially in art or literature; characterized by maunerism; artificial; unnatural; affected.

adj. having unnatural mannerisms

"... and I suddenly realized that calling a singer "mannered" is just a way of concealing a certain laziness of opinion."

affected    unnatural   

well mannered    ill mannered    bad mannered   

proportioned    intentioned    well-mannered    well-groomed    well-behaved    bodied    gentlemanly    brought-up    flippant    courteous