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avail

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(v.) to be of use or benefit to; to make use of; to take advantage of; to profit or benefit; (n.) use, benefit, or value

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cryptic

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(adj.) puzzling, mystifying, or enigmatic

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enmity

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(n.) hatred, ill-will

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fervent

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(adj.) very earnest, emotional, passionate; extremely hot

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infiltrate

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(v) to pass through or gain entrance to gradually or stealthily

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perceptible

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(adj.) capable of being grasped by the senses or mind

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proclaim

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(v.) to declare publicly or officially

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proxy

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(n.) an agent, substitute; a written permission allowing one person to act in another's place

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stint

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(v.) to limit, be sparing or frugal; (n.) a limit or restriction; a fixed share of work or duty; a period of activity

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unflagging

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(adj.) tireless, continuing with vigor