"Antichristianity" is a word in ENGLISH

Expressing contrariety, opposition, or antithesis; as, an adversative conjunction (but, however, yet, etc. ); an adversative force.

Opposition; contrariety.

In opposition to, whether the opposition is of sentiment or of action; on the other side; counter to; in contrariety …

Opposition of action; counteraction or contrariety of things or principles.

Contrariety or opposition in feeling; settled aversion or dislike; repugnance; distaste.

Direct opposition or repugnancy; inconsistency; incongruity or contrariety; one who, or that which, is inconsistent.

The state or quality of being contrary; opposition; repugnance; disagreement; antagonism.

state or quality of being contrary; opposition; inconsistency; contrariety; perverseness; obstinacy.

To set in opposition, or over against, in order to show the differences between, or the comparative excellences and defects …

Repugnance; contrariety of sentiment, interest, or purpose; antipathy.

The state or condition of being repugnant; opposition; contrariety; especially, a strong instinctive antagonism; aversion; reluctance; unwillingness, as of mind, …