1. verb To ruin or upset something. You're going to queer the whole thing if you keep asking so many questions!

2. noun A derogatory and highly offensive term for a homosexual, bisexual, transgender, or otherwise non-heterosexual or non-cisgender person.

3. noun A reclaimed term (see Definition 2) used by homosexual, bisexual, transgender, or otherwise non-heterosexual or non-cisgender people to self-identify as such. Yeah, I'm a queer, a dude who likes dudes. So what?

4. noun, slang Alcohol, especially when it is not allowed (such as during Prohibition). You better not get caught drinking that queer in here.

5. adjective Very strange. Everyone could tell he was a queer one as soon as he walked into the party with his mismatched clothing.

6. adjective A derogatory and highly offensive term used to describe a homosexual, bisexual, transgender, or otherwise non-heterosexual or non-cisgender person.

7. adjective A reclaimed term (see Definition 6) used by homosexual, bisexual, transgender, or otherwise non-heterosexual or non-cisgender people to self-identify as such or to describe related issues, interests, etc. Being queer shouldn't mean having to be treated as a second-class citizen. Queer literature is having a renaissance.

8. adjective Describing a sensibility or perspective that rejects the notion that there are only two distinct gender identities. That haircut really suits her queer aesthetic.

9. adjective Having a focus on sex and gender, especially that which is non-heteronormative. Couldn't we also do a queer reading of this text?

10. adjective Fraudulent or illegitimate. Don't show me those queer financial records—I don't want to know anything about your seedy doings!

11. adjective, slang Drunk. Do you remember last night at the bar at all? You were really queer.