Etymology
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leadership (n.)
1821, "position of a leader, command," from leader + -ship. Sense extended by late 19c. to "characteristics necessary to be a leader, capacity to lead."
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function (n.)

1530s, "one's proper work or purpose; power of acting in a specific proper way," from French fonction (16c.) and directly from Latin functionem (nominative functio) "a performance, an execution," noun of action from funct-, past-participle stem of fungi "perform, execute, discharge," from PIE *bhung- "be of use, be used" (source also of Sanskrit bhunjate "to benefit, make benefit, atone," Armenian bowcanem "to feed," Old Irish bongaid "to break, harvest"), which is perhaps related to root *bhrug- "to enjoy." Meaning "official ceremony" is from 1630s, originally in church use. Use in mathematics probably was begun by Leibnitz (1692). In reference to computer operations, 1947.

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function (v.)

1844, "perform a function" (intransitive), from function (n.). Related: Functioned; functioning.

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demagoguery (n.)

1855, "actions characteristic of a demagogue;" see demagogue + -ery. Demagogy in the same sense is from 1650s, from Greek demagogia "leadership of the people." Demagogism is by 1824.

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dysfunction (n.)

"failure to function, abnormality or impairment of function," 1914, from dys- "bad, abnormal, difficult" + function (n.). Originally in anatomy and medicine; in sociology by 1949.

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SCLC (n.)
initialism (acronym) of Southern Christian Leadership Conference, founded 1957 by the Rev. Martin Luther King Jr., Bayard Rustin, and others.
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malfunction (n.)

"a faulty functioning, a failure to function as expected," 1827, from mal- "bad, badly, wrong" + function. As a verb, "to fail to function normally or as expected," by 1888. Related: Malfunctioned; malfunctioning.

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sabbat (n.)

"witches' sabbath," a midnight meeting supposed to have been held annually by demons, sorcerers, and witches under the leadership of Satan, to celebrate their orgies, 1650s, a special application of the French form of Sabbath (q.v.).

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functional (adj.)
1630s, "pertaining to function or office," from function (n.) + -al (1), or from Medieval Latin functionalis. Meaning "utilitarian" is by 1864; specific use in architecture is from 1928. Related: Functionally; functionality.
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