Publicly
来自Big Physics
late Middle English: from Old French, from Latin publicus, blend of poplicus ‘of the people’ (from populus ‘people’) and pubes ‘adult’.
wiktionary
From public + -ly.
etymonline
publicly (adv.)
1560s, "in public," from public (adj.) + -ly (2). From 1580s as "by the public." Variant publically is attested by 1812, perhaps based on the fact that publicly is the only exception in this class of words, which as a rule are spelled -ically though often they are pronounced otherwise.
