knotty Synonyms

knotted snarled knobbed convoluted tough snarly gnarled gnarly tortuous byzantine tangled involved baffling problematic problematical spiny sticky sophisticated stressful perplexed sinuous perplexing porism precarious prickly profound puzzling recondite rough rugged scabrous sensitive severe tangly taxing thorny bumpy knobbly messy multistage nodulated nubbly nubby tousled wurly rootbound unsmoothed backbreaking uphill ticklish