QUEER

noun

1. (sometimes derogatory) A person who is or appears homosexual, or who has homosexual qualities.
2. (sometimes derogatory) A person of any non-heterosexual sexuality or sexual identity.
3. (sometimes derogatory) A person of any genderqueer identity.

verb

1. To render an endeavor or agreement ineffective or null.
2. To puzzle.
3. To ridicule; to banter; to rally.

adjective

1. Weird, odd or different; whimsical.
2. Slightly unwell (mainly in "to feel queer").
3. Drunk.