| 1 | English | flawless | Without flaws, defects, or shortcomings; perfect |
| 2 | English | flaw | A flake, fragment, or shiver; A thin cake, as of... |
| 3 | Middle English | flawe | — |
| 4 | Old Norse | flaga | a flag or slab of stone, flake; stone slab |
| 5 | Proto-Germanic | flagō | a layer of soil |
| 6 | Proto-Indo-European | plāk- | broad, flat; smooth, flat; flat, broad, plain |
| 7 | Proto-Indo-European | pele- | broad, flat, plain; broad, wide, flat |