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knotted, knotty, gnarled, gnarly, knobbed | used of old persons or old trees; covered with knobs or knots | ||
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tangled, tortuous, involved, knotty, Byzantine, convoluted | highly complex or intricate and occasionally devious | ||
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knotty, baffling, elusive, tough, problematic, problematical | making great mental demands; hard to comprehend or solve or believe | ||
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knotty, snarled, snarly | tangled in knots or snarls |