mainful

From Middle English meinful, mainful, maynful; equivalent to main (“power, might”) +‎ -ful.

mainful (comparative more mainful, superlative most mainful)

1. (now literary, archaic) Powerful; mighty.

   Synonym: mightful

   • 1844, The wars of Jehovah, in Heaven, earth and Hell:

     […] And others, the rebellious cast down / Upon them : thus the mainful main was isled / From the disruption'd heaven ; but the Lord / Present commands his saints […]

   • 1906, Clarkson College of Technology, Clarkson College of Technology Bulletin - Volume 3:

     […] to make some nook of God's creation a little more fruitful, better, more worthy of God; to make some human hearts a little wiser, more mainful, happier, more blessed, less accursed.

• flumina, flunami

mainful

1. Alternative form of meinful