" fuliginous "

[Adjective]  | "fu*lig*i*nous" | \ fyu̇-ˈli-jə-nəs \

1: sooty

2: obscure, murky

3: having a dark or dusky color

Origin: 1597 ;

 Borrowed from Late Latin fūlīginōsus "covered with soot," from Latin fūlīgin-, fūlīgō "soot" + -ōsus {see: |-ous|-ous}; fūlīgō, from fūlī- (going back to Indo-European *dhuh2-li- "smoke, dust," whence also Sanskrit dhūli- "dust," Lithuanian dū́lis "mist, dust from tree rot used to drive out bees") + -gin-, -gō, suffix denoting something coating or enveloping, usually undesirable, as rōbīgō "rust," mellīgō "bee glue";

  * Note : Indo-European *dhuh2-li- is usually taken to be a nominal derivative of the verbal base *dhu̯eh2- or *dheu̯h2- "produce smoke by burning"—see: {fume:1|fume:1}.;

[Adjective]  | "fuliginous"