Difficult GRE Words - Group 6

[Esc] (1)
a. unshakably calm; placid; incapable of being disturbed or disconcerted

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v. to encroach, transpass

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n. speech given by a person being formally inducted into office

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a. not fitting; lacking in harmony or compatibility

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a. not consisting of matter, or not having material body; immaterial; insubstantial

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n. apparatus used to maintain environmental conditions suitable for a newborn baby

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a. tireless; showing sustained enthusiastic action

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a. poor; experiencing want or need; impoverished

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a. matchless; not able to be imitated

[Esc] (10)
n. entrance of an enemy into a country with purposes of hostility; sudden or desultory incursion or invasion; raid; encroachment