to struggle with stumbling or plunging movements (usually followed by about, along, on, through, etc.): He saw the child floundering about in the water.
2.
to struggle clumsily or helplessly: He floundered helplessly on the first day of his new job.
Also called: fluke a European flatfish, Platichthys flesus having a greyish-brown body covered with prickly scales: family Pleuronectidae: an important food fish
2.
(US), (Canadian) any flatfish of the families Bothidae (turbot, etc) and Pleuronectidae (plaice, halibut, sand dab, etc)
[C14: probably of Scandinavian origin; compare Old Norse flythra, Norwegian flundra]
1590s, perhaps an alteration of founder (q.v.), influenced by Du. flodderen "to flop about," or native verbs in fl- expressing clumsy motion. Related: Floundered; floundering.
flounder
"flatfish," c.1304, from Anglo-Fr. floundre, from O.N.Fr. flondre, from O.N. flydhra, related to M.L.G. vlundere, cognate with Gk. platys "flat, wide, broad" (see place (n.)).