KEY: Perpetuity.
SYN: Constancy, permanence, perennity, persistence, continuity, fixity.
ANT: Impermanence, transience, evanescence, discontinuance, casualty, momentariness.
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KEY: Perplex.
SYN: Embarrass, puzzle, entangle, involve, encumber, complicate, confuse, bewilder, mystify, harass, entangle.
ANT: Clear, enlighten, explicate, disentangle, simplify, elucidate, disencumber.
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KEY: Perplexity.
SYN: Embarrassment, difficulty, uncertainty.