Longman Dictionary of Contemporary English
Douglas Harper's Etymology Dictionary
Wiktionary
a. Not flattering.
WordNet
adj. tending to reveal or represent unfavorably; "an unflattering portrait"; "the full unflattering light of morning"- Walter de la Mare [ant: flattering]
Usage examples of "unflattering".
Shiv and then Usara in slowly quartering the cave as Parrail read out brief and often unflattering descriptions of the people they sought.
Jefferson had indeed encouraged and paid Callender for his efforts, and he had spoken of Adams in quite unflattering terms on a number of occasions.
Those who know only the great flat, ruddy crabs with ponderous pincers and pugnacious mien, which frequent fish shop windows, can form but a very unflattering opinion of the fancy varieties which people every mile of the Barrier Reef.
Women in modest skirts or slightly unflattering pantsuits, like Jesse Simons, the Deconstructionist, who argued that doping the water supply was embracing the nomadic sign system of Albertine, which of course represented not some empirical astrophysical event, but, rather, a symbolic reaction to the crisis of instability caused by American Imperialism.
Hot in his velvets, Lord Diegan endured discomfort rather than let the dairy girl make unflattering comparisons.
Not wishing to risk Karolus on the boggy ground, he was riding another of his horses, a thickset bay who went by the rather unflattering name of Hognose, but who had excellent manners and a steady foot.
Count Sylvius cast a somewhat unflattering glance at his associate and disregarded the unwashed hand which was extended towards him.
Even the White Elves had been known to make unflattering comments about human emotions, not to mention his own dark and more serious brethren.
Lots of sunhats, mint and apricot sleeveless vests, unflattering white shorts, denim skirts, occasional students in old-fashioned summer frocks or flannels.
With the other hand she pulled the black felt cloche becoming to her delicate features though unflattering to so many wearers more snugly over her short hair.
Ivy Wrangton must have been seventeen, Wexford calculated, her face plain, puffy, young, her figure modishly pouter pigeon-like, her hair in that most unflattering of fashions, the cottage loaf.
On the other hand, I was closer to the horses before and after, watching them walk, listening to comments, mostly unflattering, from knowledgeable elbowers striving for a view.
Even in the unflattering overhead fluorescents of the chilly corridor she looked good.
The light of the glows on the wall cast unflattering shadows on the Oldtimer's heavy, lined face.
I could take one of the pictures, copy it onto film, and then enlarge it up to 8 by 10 on a nice heavy portrait paper with an ivory tint instead of unflattering white.