Etymology
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hepar (n.)

metallic sulfide, 1796, shortened from hepar sulphuris (1690s), from Medieval Latin, from Greek hēpar "liver" (see hepatitis); so called for its color.

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freer (n.)
"one who sets free," c. 1600, from free + -er (1). An Old English word for this was freogend.
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franchise (v.)
late 14c., "to make free," from Old French franchiss-, past participle stem of franchir "to free" (12c.), from franc "free" (see frank (adj.)). Franchising is from 1570s; the commercial licensing sense is from 1966. Related: Franchisee; franchiser; franchisor.
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glycogen (n.)
starch-like substance found in the liver and animal tissue, 1860, from French glycogène, "sugar-producer," from Greek-derived glyco- "sweet" (see glyco-) + French -gène (see -gen). Coined in 1848 by French physiologist Claude Bernard (1813-1878).
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liberate (v.)
"set free, release from restraint or bondage," 1620s, from Latin liberatus, past participle of liberare "to set free" (source also of Spanish librar, French livrer), from liber "free, not a slave, unrestricted" (see liberal (adj.)). Meaning "to free an occupied territory from the enemy" (often used ironically) is from 1942; hence the World War II slang sense "to loot." Related: Liberated; liberating.
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frank (v.)
"to free a letter for carriage or an article for publication, to send by public conveyance free of expense," 1708, from shortened form of French affranchir, from a- "to" + franchir "to free" (see franchise (v.)). A British parliamentary privilege from 1660-1840; in U.S. Congress, technically abolished 1873. Related: Franked; franking. As a noun, "signature of one entitled to send letters for free," from 1713.
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freeloader (n.)
also free-loader, by 1939, from free (adj.) + agent noun from load (v.). Related: Freeloading. As a verb, freeload is attested by 1967 and probably is a back-formation from this.
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libre (adj.)
"free," a French word used in various combinations in English since 16c., from French libre, from Latin liber "free" (see liberal (adj.)).
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unloose (v.)
mid-14c., "relax;" late 14c., "to set free," from un- (2), used here emphatically, + loose (v.). Old English had unliesan "unloose, set free." Related: Unloosed; unloosing.
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