Lines Not Matched from Source File

[reafian]

If I have a source file ( test.txt ) containing two line:

bc-2e-48-2d-43-70
bc-2e-48-2d-43-7g

The I can do: "sift -f test.txt -x csv" to match these two lines against a number of CSV files and this returns one valid result.

Is it possible to have the output show the non-matching lines from the source files rather than the matched lines in the search files?