ETYM Latin.
(Latin) “thus”; appearing thus in the original.(Homonym: sick).
Intentionally so written (used after a printed word or phrase).
Sometimes found in brackets within a printed quotation to show that the original has been quoted accurately even though it contains an apparent error (“she wrote threatening to charge me with assult and batery [sic] if I did not apologize”).

To urge a dog to attack someone; SYN. set.