Wiktionary
unflatteringly
adv. In such a manner as to be unflattering
Usage examples of "unflatteringly".
A plain-faced girl tugged ineffectually at his elbow, her long blond hair unflatteringly dressed in coiled braids that only served to emphasize the length of her neck and nose.
Her black hair was unflatteringly pulled back, but its innate curliness could not be hidden and he had no trouble picturing her in a stylish cut.
They waited, and a moment later the vulturelike countenance of Madam Pince appeared around the corner, her sunken cheeks, her skin like parchment, and her long hooked nose illuminated unflatteringly by the lamp she was carrying.