Trustworthy is an interesting one for an assassin house.  Maybe Loyal?  I feel like 'Honorable' may be a bit too oxymoronic combined with the concept of a house that produces assassins, unless the source of our Honor is our strict precepts to the 'War of Assassins (https://dune.fandom.com/wiki/War_of_Assassins)'<br/><br/>Which, now that I said it, is a pretty interesting idea.