murkiest

Adjective

murky (comparative murkier, superlative murkiest)

1. Hard to see through, as a fog or mist.
   • The Streets of London, to be beheld in the very height of their glory, should be seen on a dark, dull, murky, winter's night, when there is just enough damp gently stealing down to make the pavement greasy without cleansing it of any of its impurities, […]1837, “Boz” [pseudonym; Charles Dickens], “The Streets by Night”, in Sketches by Boz: Illustrative of Every-day Life, and Every-day People. The Second Series, London: John Macrone, […], →OCLC, page 19
2. Dark, dim, gloomy.
   • Ferdinand: As I hope / For quite dayes, faire Iſſue, and long life, / With ſuch loue, as 'tis now the murkieſt den, / The moſt opportune place, the ſtrongſt ſuggeſtion, / Our worſer Genius can, shall neuer melt / Mine honor into luſt,[…]1610–1611 (date written), William Shakespeare, “The Tempest”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published...
3. Cloudy, indistinct, obscure.
   • murky waters
4. (broadly) Dishonest, shady.
   • Ever since X-Men: First Class set the series' clock back a few decades and installed Michael Fassbender's moody Magneto and James McAvoy's louche Charles Xavier as replacements for Ian McKellen and Patrick Stewart's chess-playing pappies, the big-screen X-Men's central conflict—Xavier's Booker T....2016 May 23, Ignatiy Vishnevetsky, “Apocalypse pits the strengths of the X-Men series against the weaknesses”, in The A.V. Club, archived from the original on 24 May 2016