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v. Simple past tense and past participle of wriggle.

"He watched it closely, as if endeavoring to learn the precise fashion of his father's knot; and when at last Bill was swung up a-tiptoe to a limb, and the whipping commenced, Simon's eye followed every movement of his father's arm; and as each blow descended upon the bare shoulders of his sable friend, his own body writhed and "wriggled" in involuntary sympathy."

wriggled    wriggles    wriggling   

motility    movement    motion    move   

wriggled    wriggling    wriggly    wriggler   

squirm    wriggling    frisky    pliant    flexible   

giggle    jiggle    riggle    squiggle    wiggle   

frig    writhe    throe    heave    bellow