Overpoise

And I hope, the known avowed use and experience of such great Men, and those in so great a number, is an abundant overpoise to the contrary Affirmation of this, or any other Novel Author whatsoever.

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I recognised The moths, with that great overpoise of wings Which makes a mystery of them how at all They can stop flying: […]

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Without swallowing whole all the warnings one could readily hear and read about the spiritual dangers of intellectual arrogance and literary freebooting, there was menace in the overpoise that high education and a rich way of living could confer on a young girl. Unknowingly, she could exceed her own strength.

Source: wiktionary

1587, Raphael Holinshed et al., Holinshed's Chronicles, London: John Harrison et al., Volume 2, “A Treatise conteining a plaine and perfect description of Ireland,” p. 36, But sith it pleased your maiestie, with so indifferent balance to ponder both our tales, I am throughlie persuaded, that my loiall innocencie shall be able, to ouerpoise his forged treacherie.

Source: wiktionary