overpoise

That which outweighs; excessive weight.

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.

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

To exceed in importance, strength or value.

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.

To render a thing fit for rational belief, there is no more requir’d but that the motives for it do over-poise those against it […]

To place excessive weight on (someone or something).

Tis time [f]or me to stirre when such young boyes, Shal haue their weake neckes ouer poisd with crownes

1658, Thomas Browne, Pseudodoxia Epidemica, London: N. Ekins, 3rd edition, Book 4, Chapter 6, p. 168, Whether cripples and mutilated persons, who have lost the greatest part of their thighs, will not sink but float, their lungs being abler to waft up their bodies, which are in others overpoised by the hinder legs, we have not made experiment.

To throw (someone or something) off balance.

[…] the Stone in my Fathers Body was so immense, that I’ve wonder’d it did not bunch up behind, and make him have a Hump-back, or at least overpoise him in walking, and drag him backward with its incredible weight.

[…] Harry, perceiving his Instructor a little overpoised, suddenly gave him an inside Foot, and a Push at the same Instant toward the Part to which he inclined.