In French, we have an equivalent for "depreciate": déprécier. But we don't have a close relative for "deprecate" (which translates to "désapprouver, dénigrer" and would never be used for an API).

We tend to use the terms "déprécié" (~depreciated) or "déprécaté" (~deprecated but not valid French).

On the other hand, "deprecate" seems to also translate to "mark as obsolete" according to https://www.wordreference.com/enfr/deprecate

I guess both terms make sense but I would keep using "deprecated".