INDIFFERENTISM
Etymology
Noun
indifferentism (usually uncountable, plural indifferentisms)
(religion) The doctrine that all religions are equally valid.
(more broadly) Relativism, agnosticism; apathy, indifference.
(countable) An expression of such a doctrine or view.
(philosophy) The doctrine of absolute identity, i.e. that to be in thought and to exist are one and the same thing.
Source: Wiktionary
In*dif"fer*ent*ism, n. Etym: [Cf. F. indifférentisme.]
1. State of indifference; want of interest or earnestness;
especially, a systematic apathy regarding what is true or false in
religion or philosophy; agnosticism.
The indifferentism which equalizes all religions and gives equal
rights to truth and error. Cardinal Manning.
2. (Metaph.)
Definition: Same as Identism.
3. (R. C. Ch.)
Definition: A heresy consisting in an unconcern for any particular creed,
provided the morals be right and good. Gregory XVI.
Source: Webster’s Unabridged Dictionary 1913 Edition