An outgrowth of a conversation about aromantic orientations, and the desire to be able to define relationships that are not romantic, that are also not friendships, and that play an important role in your life. I think it’s time to turn this one loose into the wild. Use it well, use it widely. (If you identify with it, at any rate.)
Queerplatonic is a word for describing relationships where an intense emotional connection transcending what people usually think of as ‘friendship’ is present, but the relationship is not romantic in nature; people in a queerplatonic relationship may think of themselves as partners, may plan on spending their lives together, etc. The ‘queer’ is a reference to the idea of queering relationships and ideas about relationships, not for describing the orientations or genders of anyone in a queerplatonic relationship. Anyone, sexual or asexual, romantic or aromantic, straight, gay, queer, bi, lesbian, poly, cis, trans, etc etc can be in a queerplatonic relationship, can have more than one such relationship, and there can be more than two people in a queerplatonic relationship; couples, triads, quads, whatever. The key feature is the idea of being deeply connected to someone, without a romantic element (though a queerplatonic relationship can be sexual).
ETA: I also want to note that there are many different kinds of queerplatonic relationships; we’ve been jokingly referring to them with different vegetables (‘she’s my zucchini,’ ‘I definitely think of ou as my eggplant’ etc.). The point is that this is an umbrella term that encompasses many different types of relationship, rather than being rigid; it’s fluid!