adjective, -si⋅er, -si⋅est, noun, plural -sies.| 1. | without material strength or solidity: a flimsy fabric; a flimsy structure. |
| 2. | weak; inadequate; not effective or convincing: a flimsy excuse. |
| 3. | a thin kind of paper, esp. for use in making several copies at a time of an article, telegraphic dispatch, or the like, as in newspaper work. |
| 4. | a copy of a report or dispatch on such paper. |