Unniecely

The jaded tastes of tea-sippers in London and in every other place where the name of Duke of Westminster conjures up visions of stately baronial halls received a fillip when the duke announced he was bringing a suit for libel against his own niece, Lady Sibell Lygon, a magazine writer. The duke, it appeared, took grave exception to what he regarded as unniecely remarks concerning him personally in Lady Sibell’s writing.

Source: wiktionary

Lucas’s first instinct was to give her a hug and assure her that everything was all right. But with Julie thinking definitely unniecely thoughts about him, he didn’t dare embrace her.

Source: wiktionary

It was just a brief kiss, one that even Bernadine would have thought entirely appropriate between an uncle and niece had she happened to see it. But its briefness wasn’t the whole story. In that scant second that his lips claimed hers, Stacey felt herself suffused with warmth as a most unniecely heat flooded her body.

Source: wiktionary

Still, she knew it was not merely unladylike but also unniecely to begrudge her beloved aunt the happiness of her Lester.

Source: wiktionary