(There are more open questions in the dictionary. Ones that are specifically about an existing word go in the word's Notes field; to search for them, put "Open question" in the Notes box.)

The adjective/noun distinction

I've written a lot about this in this comment and its subtree. In this below comment, I started to change my mind.

Directness

I need to deal with concepts of directness. In English, we often say things like "directly cause" drawing a relevant distinction between that and indirect causation. The distinctions are very important. I should probably have a different verb for that. I already spent zo, so maybe zyu?

There might also be a need for "directly say" or perhaps "indirectly say" while tel means directly say. Maybe tʌl.

Quantifier problems

I've discussed this one in the comments on quantifiers. I have no idea what a good approach is.

Distinguishing "technically can" from "practically can"

These merit separate words. Currently, "can" is ve, and I would make the other one vye. But which one should be which? Which is more common?

Update: I've become very unsure that I should do this.

How do we distinguish "see someone doing X" from "see (evidence) that (at least) someone does X"?

Currently, I would translate both as kivu ke yɪm zu X.

It seems like we need a version of the current word ki that applies to clauses, whereas the current one always binds with the next verb or entity word. I don't think it's good to use the same word for both of them because that could lead to a lot of ambiguities.

On the other hand, maybe it's the former that should be rightfully translated as that, and I should change the way I express the latter.

Male and female

At some point, Spem needs one syllable words for male and female. Unfortunately I think I'm too biased to choose the sounds that go into these. I want to get at least a few other opinions from other people who do not have irrational beliefs about the nature of gender; at least one from a woman, and preferably some from people whose native language is not English. (I realize how difficult that'll be for me to find, but that's part of why I want to post the question before it's close to the most urgent thing on the list.)

My intuitions are to use f and perhaps m for female, and r and maybe ŋ for male. But looking at that, it seems so blatantly derived from conservative gender norms and the existing English word 'female' that I don't trust my intuition on this one. Of course, it's far from impossible that those sounds really are the best ones to use, but considering that I'm male and generally think the masculine side of said gender norms are a lot closer to how all people should act, I want other opinions.

Emphasizing different sides of degree modifiers

There are pairs like "almost" versus "not quite"; or "slightly" versus "barely". Note that in either case they designate the same degree but one emphasizes the positive side and the other emphasizes the negative side. Currently Spem doesn't do separate words for this. Arguably, nur should be understood as "slightly" and "barely" should be conveyed with neni nur. But I feel it's a problem that I can't currently convey the meaning of English "partially" in the positive sense, because nor specifically means a medium degree, whereas partially covers anything that isn't complete; and nu kir emphasizes the negative side.

This is very similar to the question of whether "but" should exist - it means the same thing as "and" (that both statements are true), but implies a notion that the two are in contrast. I hate the word on principle because that "contrast" is such a vague idea and there are so many ways to use it to create harmful ambiguities. But maybe it's too useful to not have. I don't know. I haven't thought much about "flow control" words like that, but I'm attracted to the idea of having different sentence-linking conjunctions to specify what the relationship between the sentences is supposed to be (for example, one that means the preceding is a sort of preface to the following). I just don't like this one. But maybe any kind of word like that would have this problem, and I'd see it with the others if I used them for a while.