quag

But a combination of mishaps and bungled central planning finally plunged the country into a hopeless economic quag mire that enraged the workers.

From Time Magazine Archive

I suppose he must have wrung his off hind leg in fighting through the quag.

From The Splendid Spur by Sir Arthur Thomas Quiller-Couch

Once the quag was so deep, that to avoid sinking in it we had to be carried, one by one, on the back of our Malay driver.

From Narrative of the Circumnavigation of the Globe by the Austrian Frigate Novara, Volume I (Commodore B. Von Wullerstorf-Urbair,) Undertaken by Order of the Imperial Government in the Years 1857, 1858, & 1859, Under the Immediate Auspices of His I. and R. Highness the Archduke Ferdinand Maximilian, Commander-In-Chief of the Austrian Navy. by Karl Ritter von Scherzer

That was a place of wailings, And the grisly things of Death,— The bare black arms of the trees above, And the black quag underneath.

From Bees in Amber A Little Book of Thoughtful Verse by John Oxenham

I've some hundreds of quarters of it on hand; and if your renovating process will make it wholesome, why, you can see what a quag 'twould get me out of.

From The Mayor of Casterbridge by Thomas Hardy