n. 挣扎
adj. 挣扎的
v. 挣扎（flounder的ing形式）

Flounder \Floun"der\, v. i. [imp. & p. p. {Floundered}; p. pr. &
vb. n. {Floundering}.] [Cf. D. flodderen to flap, splash
through mire, E. flounce, v.i., and flounder the fish.]
To fling the limbs and body, as in making efforts to move; to
struggle, as a horse in the mire, or as a fish on land; to
roll, toss, and tumble; to flounce.

They have floundered on from blunder to blunder. --Sir
W. Hamilton.