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acephalism
expectations
georges eugene benjamin clemenceau
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shook
a hell of a
submission
earache
here today gone tomorrow
system
aviation
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frontier
frontier
/frənˈtɪr/
noun
(
)
A wilderness at the edge of a settled area of a country
(
frontier
)
a wilderness at the edge of a settled area of a country
The individualism of the frontier in Andrew Jackson's day
the individualism of the frontier in Andrew Jackson's day
An undeveloped field of study; a topic inviting research and development
(
frontier
)
an undeveloped field of study; a topic inviting research and development
He worked at the frontier of brain science
he worked at the frontier of brain science
An international boundary or the area (often fortified) immediately inside the boundary
(
frontier
)
an international boundary or the area (often fortified) immediately inside the boundary
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