To roll, as the body of an animal; to tumble about, especially in anything foul or defiling; to wallow.

To rise and fall, as waves; to tumble over, as billows.

That in which any person or thing welters, or wallows; filth; mire; slough.

wriggle, wride.

wriggle, right, wriffe.

wriggle, writhe.

To wither; to wilt.

a confused multitude of things

be immersed in; "welter in work"

Of, pertaining to, or designating, the most heavily weighted race in a meeting; as, a welter race; the welter stakes.