What is the meaning of Queer?

Weird, odd, or different; whimsical.

Slightly unwell (mainly in "to feel queer").

Drunk.

Homosexual.

Non-heterosexual or non-cisgender: homosexual, bisexual, asexual, transgender, etc.

Pertaining to sexual or gender behaviour or identity which does not conform to conventional heterosexual or cisgender norms, assumptions etc.

A person who is or appears homosexual, or who has homosexual qualities.

A person of any non-heterosexual sexuality or sexual identity.

A person of any genderqueer identity.

Counterfeit money.

To render an endeavor or agreement ineffective or null.

To puzzle.

To ridicule; to banter; to rally.

To spoil the effect or success of, as by ridicule; to throw a wet blanket on; to spoil.

To reevaluate or reinterpret (a work) with an eye to sexual orientation and/or to gender, as by applying queer theory.

To make a work more appealing or attractive to LGBT people, such as by not having strict genders for playable characters.

Queerly.

Very, extremely.

queer (not conforming to conventional sexual or gender norms)

queer (not conforming to traditional sexuality)

queer

Alternative form of quer

Alternative form of quer

queerness (quality of being queer, in the sense of not conforming to sexual or gender norms)

queer (not heterosexual, or not cisgender: homosexual, bisexual, asexual, transgender, etc.)

queer

Source: wiktionary.org