Difficult IELTS Words - Group 4

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n. ban on commerce or other activity

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v. insert in a roil; register or enter in list or catalogue; insert in records; enlist

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v. imply or require; cause to ensue or accrue; cut or carve in ornamental way

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v. give right to; authorize; furnish with a right or claim to something; designate; give title to

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n. any of several complex proteins that are produced by cells and act as catalysts in specific biochemical reactions

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n. the imaginary great circle on the earth's surface, everywhere equally distant from the two poles, and dividing the earth's surface into two hemispheres

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v. construct; stand; set up

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v. eat away; wear away by abrasion; become worn

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v. increase severity, violence, or bitterness of; aggravate

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v. cause; apply; exercise