To alter so as to make false; to make incorrect.
To misrepresent.
To prove to be false.
To counterfeit; to forge.
To show (an item of charge inserted in an account) to be wrong.
To introduce (something) between other things; especially to insert (possibly spurious) words into a text.
During the course of processing some data, and in response to a directive in that data, to fetch data from a different source and process it in-line along with the original data.
To estimate the value of a function between two tabulated points.