quagmire[noun]Synonyms: bog, fen, marsh, mire, morass, quicksand, slough, swamp 
 [TahlilGaran] English Synonym Dictionary ▲
 quag‧mire /ˈkwæɡmaɪə, ˈkwɒɡ- $ ˈkwæɡmaɪr/ 
 noun [countable usually singular][
Date: 1500-1600; 
Origin: quag 'soft wet ground' (16-20 centuries) (perhaps from quag 'to shake' (17-19 centuries)) + mire]
1.  an area of soft wet muddy ground: 
 In the rainy season the roads become a quagmire.2.  a difficult or complicated situation: 
 The Balkan situation became a political and military quagmire.  [TahlilGaran] Dictionary of Contemporary English ▲