flim·sy 
(flĭmzē)
(flĭmzē)adj. flim·si·er, flim·si·est
1. Light, thin, and insubstantial: a flimsy fabric.
2. Lacking solidity or strength; easily damaged: a flimsy table. See Synonyms at fragile.
3. Lacking plausibility; unconvincing: a flimsy excuse.
n. pl. flim·sies
1. Thin paper usually used to make multiple copies.
2. Something written on this thin paper.
[Origin unknown.]
flimsi·ly adv.
flimsi·ness n.