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

Bene, satis, male,— Where was I with my trope 'bout one in a quag?

From The Book of Humorous Verse by Carolyn Wells

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

The mud floor became a quag: I seized a spade and shovelled it clean, mud and slime and worse filth together.

From Sir John Constantine Memoirs of His Adventures At Home and Abroad and Particularly in the Island of Corsica: Beginning with the Year 1756 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