[Fury]

And the concordance DOES show anti as having an acceptable use of 'substitute', to go along with the substitute/antipopes.

Can you please provide a link for the concordance?

I believe the dictionary I used provided an accurate description of the definitions for "anti-". That's not to say there are not other defintitions, subject to seeing a citation, of course. Thanks...

[ET(end tyranny)]

473 anti an-tee' a primary particle; opposite, i.e. instead or because of (rarely in addition to):--for, in the room of. Often used in composition to denote contrast, requital, substitution, correspondence, etc.

Strong's Lexicon

from the Greek
473 anti an-tee'
1) over against, opposite to, before
2) for, instead of, in place of (something)
a) instead of
b) for
c) for that, because
d) wherefore, for this cause

BLB search results

I access both from HERE