slimsy \SLIM-zee, adjective: Flimsy; frail. Slimsy is an Americanism that came into common use in the 1830s and early 1840s. It is a combination of slim and flimsy.“Nice girl …” he mused, “but sort of thin and slimsy and delicate, not robust and hearty like the kind of girl you ought to have on a farm.”
— Bess Streeter Aldrich, A White Flying BirdThe coat was a slimsy bit of dark silk, with a glister in it; and the hat was the thinnest straw, the brim curling a little in the wind.
— Max Brand, Storm on the Range