[adjective] making great mental demands; hard to comprehend or solve; "a baffling problem"; "I faced the knotty problem of what to have for breakfast"; "a problematic situation at home" Synonyms:baffling, problematic, problematical
[adjective] used of old persons or old trees; covered with knobs or knots; "gnarled and knotted hands"; "a knobbed stick" Synonyms:gnarled, gnarly, knotted, knobbed
[adjective] highly involved or intricate; "the Byzantine tax structure"; "convoluted legal language"; "convoluted reasoning"; "intricate needlework"; "an intricate labyrinth of refined phraseology"; "the plot was too involved"; "a knotty problem"; "got his way by labyrinthine maneuvering"; "Oh, what a tangled web we weave"- Sir Walter Scott; "tortuous legal procedures"; "tortuous negotiations lasting for months" Synonyms:Byzantine, convoluted, intricate, involved, labyrinthine, tangled, tortuous
