liquor (n.) Look up liquor at Dictionary.com
c.1200, likur "any matter in a liquid state," from Old French licor "fluid, liquid; sap; oil" (Modern French liqueur), from Latin liquorem (nominative liquor) "liquidity, fluidity," also "a liquid, the sea," from liquere "be fluid, liquid" (see liquid (adj.)). Narrowed sense of "fermented or distilled drink" (especially wine) first recorded c.1300. To liquor up "get drunk" is from 1845. The form in English has been assimilated to Latin, but the pronunciation has not changed.