Demihuman
Demihuman is a term adopted into the /tg/ lexicon from Advanced Dungeons & Dragons. Prior to 3rd edition, it was a term used in-game to refer to humanoid races - well, specifically, "demihuman" referred to the elf, dwarf, gnome and halfling races, whilst other races, such as orcs, goblinoids, kobolds, xvarts, ogres and so forth were all lumped together as "humanoids".
With the release of 3rd edition, this term dropped from the official D&D lexicon, under what a troper would call "Unfortunate Implications" - basically, the combined ideas that 1, "civilized humanoids are still less than true humans", and 2, "only humanoids that are allied with humans should be considered civilized".
Still, the term does occasionally pop up; aside from the obvious approval for both of those ideas by the Humanity Fuck Yeah crowd, the plain truth of the matter is that "demihuman" is a simple shorthand way of referencing all of the "traditionally non-evil humanoid races" in a short amount of space. And what fa/tg/uy is opposed to the idea of having a shorthand name to call something, really?