countercharm

From counter- +‎ charm.

countercharm (plural countercharms)

1. That which counteracts a charm; a counterspell.
   • 1911, James George Frazer, The Golden Bough, volume 11, page 282:

     Just as in Scandinavia the parasitic rowan is deemed a countercharm to sorcery, so in Germany the parasitic mistletoe is still commonly considered a protection against witchcraft.

countercharm (third-person singular simple present countercharms, present participle countercharming, simple past and past participle countercharmed)

1. To destroy the effect of a charm upon.

• countermarch