(ˈ)fyü|lijənəs adjective
Etymology: Late Latin fuliginosus sooty, from Latin fuligin-, fuligo soot + -osus -ose; akin to Middle Irish dūil wish, Lithuanian dulsvas smoke-colored, Latin fumus smoke — more at fume
1. obsolete : of or relating to certain noxious bodily vapors formerly held to be produced by organic processes
it is not amiss to bore the skull with an instrument to let out the fuliginous vapors — Robert Burton
2.
a. : of, relating to, or containing soot : sooty
plenty of Londoners who are fed up with the current spell of fuliginous , choking weather — Mollie Panter-Downes
b. : clouded , obscure , murky
a fuliginous sense of ironical humor — W.J.Locke
3. : having the color of soot : dark , dusky
• fu·lig·i·nous·ly adverb