flimsy

1. A thing which is ill-founded, unconvincing, or weak. (countable, dated, uncountable)
2. Thin typing paper used together with carbon paper in a typewriter to make multiple copies of a document; (countable) a sheet of such paper. (dated, uncountable)
3. A service certificate. (countable, dated, slang)
4. A banknote; (uncountable) paper money. (countable, dated, slang)
5. The text to be set into pages of magazines, newspapers, etc.; copy. (dated, uncountable)

Plural flimsies