sic (adv.)

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."

sic (v.)

"to set upon, attack;" see sick (v.).

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Definitions of sic from WordNet
sic (v.)
urge to attack someone;
The owner sicked his dogs on the intruders
the shaman sics sorcerers on the evil spirits
Synonyms: set
sic (adv.)
intentionally so written (used after a printed word or phrase);