Group (E) - Spelling Practices

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(1) a. Syn. thrifty; saving(экономические) thrifty; saving; using the minimum of time or resources necessary for effectiveness
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(2) a. Syn. effective(эффективного) effective; acting directly to produce an effect; exhibiting a high ratio of output to input
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(3) v. (EKE) supplement with great effort; add to; augment
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(4) v. (пройти) slip or glide away; pass away silently
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(5) n. (энциклопедии) a reference work containing articles on various topics 
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(6) v. Syn. reserve(заниматься) obtain for services of; arrange for the use of; pledge or promise, especially to marry
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(7) n. Syn. inquiry(запрос) search for knowledge; systematic investigation
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(8) n. (этика) a set of principles of right conduct; theory or a system of moral values
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(9) n. Syn. development; progression(эволюция) development; progression
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(10) v. Syn. irritate(раздражать) make worse; irritate; make very angry or impatient; annoy greatly