flounder
1. floun.der \'flau.n-d*r\ n or flounder or flounders [ME, of Scand origin; akin to ON flythra flounder, flatr flat] pl : FLATFISH; esp : one of either of two families (Pleuronecti dae and Bothidae) that include important marine food fishes 2. flounder \-d(*-)rin\ vi or floun.der.ing [prob. alter. of founder] 1: to struggle to move or obtain footing 2: to proceed clumsily