Thanks for the examples, I'll note them. We did intentionally scale back from the classic wordgame dictionaries (looking at you, Scrabble) due to an overabundance of archaic words that the NPC can play against you — but it does push us into the unfortunate role of dictionary moderators!
I'd like to add a button to the dictionary to report words that should be included. For now, we erred on the side of a smaller dictionary since it's less jarring to add words than remove them :)
(stere / steres is especially regrettable, sorry!)