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EUTHENICS(NOUN) – science

dealing with improving living conditions

Synonym-upgrade
Antonym-diminishthe science of improving the human species through control of environmental factors

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EUPHEMISM(Noun)- an indirect

word or expression substituted for one considered to be too harsh or blunt when referring to something unpleasant or embarrassing

Synonym-delicacy
Antonym-curtA mild, indirect, or vague term for one that is considered harsh, blunt, or offensive

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EUGENICS(Noun) – science

dealing with improving the hereditary qualities of the human race

Synonym-ancestry

Antonym-acquirement

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HIERARCHY (Noun)- Body of rulers or officials grouped in ranks, each being subordinate to the rank above it; pecking order

Synonym-ranking

Antonym-

hierarchy is the various levels of priests in the Catholic church.
Read more at http://www.yourdictionary.com/hierarchy#pKs3WB4Q06ZAjQm2.99

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ANARCHY(Noun) -

Total absence of rule of government; confusion; disorder

Synonym-chaos

Antonym-peace

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INCONTROVERTIBLE(Adj) Not able to be “turned opposite” or disputed; not open to question

Synonym-certain

Antonym-questionable

it by no means follows, however, from this incontrovertible evidence that the acquisition either of the jaw or of the lateral fins had not been in itself an extremely gradual process.

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VERTIGO(noun) a sensation of whirling and loss of balance, sometimes caused by disease affecting the inner ear or the vestibular nerve.

Synonym-disequilibrium

Antonym- equilibrium

Vertigo is a frequent result of cerebellar injury: animals indicate it by their actions; patients describe it.

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REVERT (Verb)- Return; go back

Synonym-regress

Antonym-progress

It did not revert to the crown till his death in 1447.

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CONJECTURE (Noun)- Guess; supposition; inference

Synonym-hunch

Antonym-fact

I've made various conjectures on how the situation would turn out.

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TRAJECTORY (Noun)-the curved path along which something moves through the air or through space.

Synonym-direction

Antonym-deviation

The effect is as if there was a mean sidelong thrust w tan S on the shot from left to right in order to deflect the plane of the trajectory at angle 6 to the vertical.