Group (U V W Y Z) - Spelling Practices

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(1) a. Syn. supersonicsupersonic; higher in frequency than the range of sound perceptible to the human ear
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(2) a. Syn. subterranean; buriedunder the level of the ground; buried
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(3) v. Syn. embark; assumetake on; embark on; assume
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(4) n. Syn. task; project; careertask or assignment undertaken; career
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(5) a. peaceful without disturbance; free from interruption
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(6) v. Syn. disentangle; solveundo or ravel knitted fabric of; separate and clarify; solve
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(7) n. device or structure for controlling the flow of a fluid 
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(8) n. Syn. speedrapidity or speed of motion; swiftness
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(9) n. Syn. border; edgeextreme edge or margin; border; enclosing boundary; space enclosed by such a boundary
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(10) a. Syn. sticky; glueysticky; gluey; having high resistance to flow