A word that used to mean 'gay or lesbian', probably excluding bisexual and pansexual people. Nowadays it's a catch all term used to mean 'transgender, nonbinary or gender nonconforming'. Personally I do not like the widespread use of this term because transgenderism and gender conformity are both issues that are important enough to be treated separately, even though they can of course intersect. It's a bit like having a catch-all phrase that means 'woman or black person or both'. Also encourages gender essentialist thinking which is a problem on the modern 'left'.
Person A) Bob is queer.
Person B) Does that mean Bob is transgender, or gender nonconforming, or both?
Person A) I don't know.
Non-heterosexual and its none of your business to ask anymore questions about what the person "actually is"
Rupert: Hey, are you gay?
Alex: Bitch, Im queer
Rupert: So does that mean you are gay, bisexual, into guys, girls, enbys or what?
Alex: I said Im queer, now go educate your self