Adjective
almyghty (comparative more almyghty, superlative most almyghty)
Archaic spelling of almighty.
He then "displayed his bannars: dyd blowe up the trompets: commytted his caws and qwarell to Almyghty God, to owr most blessyd lady his mother: Vyrgyn Mary, the glorious Seint George, and all the saynts: and advaunced, directly upon his enemyes." Source: Internet