SYN: Assiduous, diligent, painstaking, indefatigable, arduous, burdensome, toilsome, wearisome, industrious, hard-working, active, difficult, tedious.
ANT: Idle, indiligent, lazy, indolent, easy, facile, light, feasible, simple.
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KEY: Labyrinth.
SYN: Maze, complexity, bewilderment, involution, perplexity, inexplicable, difficulty.
ANT: Clue, explication, elimination, enucleation.
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KEY: Lace, [See BIND].
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KEY: Lacerate, [See TEAR].