insertion in printed quotation to call attention to error in the original; Latin, literally "so, thus, in this way," related to or emphatic of si "if," from PIE root *so- "this, that" (source also of Old English sio "she"). Used regularly in English articles from 1876, perhaps by influence of similar use in French (1872).
[I]t amounts to Yes, he did say that, or Yes, I do mean that, in spite of your natural doubts. It should be used only when doubt is natural; but reviewers & controversialists are tempted to pretend that it is, because (sic) provides them with a neat & compendious form of sneer. [Fowler]
Sic passim is "generally so throughout."
1931, from the theories, experiments, and methods of Russian physiologist Ivan Petrovich Pavlov (1849-1936), especially in connection with the conditioned salivary reflexes of dogs in response to the mental stimulus of the sound of a bell (attested from 1911, in Pavloff [sic] method).
"in which smoking is not permitted," 1905; the sign wording itself is attested by 1817.
Smoking is a vice to [sic] — and a national one, of such magnitude that railroad corporations throughout all their routes in the United States, have a special command in large letters, conspicuously placed at depots and inside of the cars — "No smoking allowed here." ["The Sailor's Magazine," December 1840]
1530s, "attack, assault, a rushing or setting upon," from on + set (n.); compare verbal phrase to set (something) on (someone), c. 1300, originally "sic (a dog) on." Weaker sense of "beginning, start" is recorded from 1560s. Figurative use in reference to a calamity, disease, etc. is from 1580s. Middle English had set (n.3) "attack, onslaught" (mid-14c.).