detriment

Harm, hurt, damage.

“But marriage in secret, Nikolay Vsyevolodovitch — a fatal secret. I receive money from you, and I'm suddenly asked the question, 'What's that money for?' My hands are tied; I cannot answer to the detriment of my sister, to the detriment of the family honour.”

"Would it be fair to say that when it came to making trouble, you'd make up for what you didn't absolutely know . . . and to our detriment?"

A charge made to students and barristers for incidental repairs of the rooms they occupy.

The position or state of a planet when it is in the sign opposite its house, considered to weaken it.

Saturn, Jupiter and Mars from their conjunction to their opposition with the Sun are Oriental, and gain two fortitudes; but from their Opposition to their Conjunction are occidental, and incur two detriments.

DEJECTION [with Astrol.] said of the planets, when in their detriment, i.e. when they have lost their force or influence by reason of being in opposition to some other, which check and contract them.

The position or state of being eclipsed, entirely dark (sable).

Argent, a Moon in her detriment or Eclipse Sable[…]

Moon in its Detriment, or Wane

To be detrimental to; to harm or mar.